The ULTIMATE Peruvian FOOD TOUR 🇵🇪 in Lima (14+ dishes!)

[@AdventuresofAplusK]

A HUGE thank you to Airalo for sponsoring this video! Get Airalo today, and use our code AK3 for $3 USD OFF your data plan: try.airalo.com/AdventuresofAplusK 📅 This video was filmed in mid September 2024 💸Learn how we flew to Peru for FREE and got multiple FREE nights at hotels: adventuresofaplusk.com/our-favorite-travel-credit-cards/ 🥾See ALL of our gear here: adventuresofaplusk.com/gear/

[@txfpmom]

We are going to Peru (starting in Lima) in April. I just love it when I find videos from y’all in places where I will be going in the future. Thank you! I can’t wait to try all the food and drinks there!

[@AdventuresofAplusK]

Awesome! We have 7 more videos and we’ll be creating lots of helpful content on our website!

[@txfpmom]

@@AdventuresofAplusKI’ll be watching all of them! I’m nervous about the altitude in Cusco, but other than that, I am so excited for this trip!

[@kennyi0]

@@txfpmomBienvenida al Perú !

[@adolfobriceno1635]

@txpmom If you are planning to travel to Peru in April you would start dieting now. LOL. The food is awesome but you might gain weight.

[@ManuOviedo-d6b]

Your belly will be happy!

[@mariangomz7919]

What!? I can’t believe my favorite travel vloggers are in Peru! I lived there for 3 years, originally from Buenos Aires.

[@AdventuresofAplusK]

We had a wonderful time!

[@edubzz14]

I love Peru! I went in 2022. My fave dishes were the alpaca, lomo Saltado & antichuchos!! Chifa was so so good too yum.

[@AdventuresofAplusK]

We looooved those dishes as well!

[@NoahMotl]

Awesome!!! When I was in college I was able to take a travel study class to Peru and it was awesome!!!

[@Daniel-mx3fy]

Se los quiere mucho amigos❣♥️❣sean siempre bienvenidos al pais🇵🇪❣♥️❣🇵🇪

[@AdventuresofAplusK]

Muchas gracias!

[@jonathan198117]

What are you talking about man??? You 200% wrongu​@Gonzaloalmendarezn7602lllllll

[@BackcountryExposure]

Ahhh this was a nice return to Peru for me from the trip I took in 2017. The food there truly is so good! Chifa for the win!

[@AdventuresofAplusK]

We're glad you enjoyed it! Peru is a special place as you know!

[@DougParkville]

Beef heart braised in Sake with onions, garlic, thyme, and mushrooms is fabulous over rice. Glad you tried the anticuchos.

[@AdventuresofAplusK]

YUM! That sounds delicious

[@RenzoStefanoPontexRuiz]

Welcome to my country! You guys are so sweet, This is my country and I love living here. I hope you have a great trip and I hope you have a great day. Thank you so much for sharing this vlog with us, I'm from Peru and Have a great weekend.

[@AdventuresofAplusK]

Thank you! 😃

[@norwaybirds3015]

The food looks AMAZING!! ❤ thank you for sharing 🙏

[@hugosonccosal4965]

Welcome to Perú 🇵🇪 👍

[@g2t]

i brought a bottle (glass) of Inca Kola back from Peru in 2001. It lost it's yellow color after a couple of years. I do remember it tasting like bubble gum

[@AdventuresofAplusK]

Interesting that it lost its color! Thanks for watching

[@kebeaux6546]

So many different foods, I would never get to them all. Glad you two took the time and effort to bring them to us. Well done. Onward to Cusco!!!!

[@AdventuresofAplusK]

Thanks, Kevin!

[@kebeaux6546]

@ Any fly fishing planned down that way? Forgot…. You may already be back in the US

[@HelenMussemann]

Awesome video! Would love to go to Peru one day and recreate this food tour

[@AdventuresofAplusK]

We hope you do!

[@joecoraz5559]

Espero tranquilaa solo llegas y me contactas vamos comer riko comida de dioses 4:14

[@keepthewheelsrolling]

I'm full watching you eat. Looks delicious .

[@mariogutierrezc]

Hello, thanks for your video about Lima. I was born and raised here . The fish in your ceviche or any kind of seafood have been caught same day at 5am. One of the valid reason for gringos having some kind of reticense with ceviche in Peru ( before tasting it ) is previous experience with frozen fish, where the texture, the flavor and smell radically changes. On the other side here, It is totally fresh, just adding a thin layer of crushed ice on the top. It arrives at the cevicheria (restaurant) at about 8am and cook at 12am / 3pm according to the demand. This is done all year around in all the coast of Peru during the 365 days. We can guilt Humboldt Current for this privilege. 😄

[@AdventuresofAplusK]

We had a wonderful time in Peru! Thank you and thanks for watching!

[@freddycunzza1385]

Right it on guys!. Have your wonderfull time, fun, and enjoying my country. There are a lot places to meet. Peru is so beautifull at all (sea, sierra and amazon jungle).

[@MenteCuriosa_1997]

Your video has great quality. They chose the places very well to have a good first impression of the meals and a very good list. Im very happy that you enjoyed the delicious food of my country

[@AdventuresofAplusK]

We had a wonderful time. Thank you and thanks for watching!

[@StaciChege]

Awesome video as always! Great range of foods. I really like Peruvian chicken. I found a recipe and have made it quite a bit. I even have made a Peruvian thanksgiving turkey.

[@AdventuresofAplusK]

Peruvian chicken for Thanksgiving yum!

[@jordanpawley2248]

Thanks for posting! Added a few of these places to my list for Monday. And Am looking forward to spending the next 3 weeks motorcycling around Peru.

[@AdventuresofAplusK]

Nice! Safe travels and have fun!

[@garyconley69]

Some good looking grub here!!! My wife and I really enjoyed the video being foodies! Keep up the great work and safe travels down there!

[@AdventuresofAplusK]

Thanks and thanks for watching!

[@letty88]

I enjoy the food and beverage vlogs the BEST!!! Thank you for sharing!!! Pollo at the end looked tasty. 👍🏼🫶🏼🍁

[@AdventuresofAplusK]

Thank you!

[@jillhurford4522]

Wow! One of the best food videos I've ever seen! Great job! Again .... looking forward to the next video. Loved how you worked through the bees. I also liked how you mixed it up with different food places/ different experiences. 😊❤

[@mindiwilhelm4322]

❤ Kathryn can do a pull up! Wow! Well done!

[@StaciChege]

Yes! I was impressed!

[@TouristtoLocal]

Ok but the scene with you guys on the workout equipment was so adorable ❤️ THIS VIDEO MADE IS HUNGRY! nicely done!

[@AdventuresofAplusK]

Haha it was too much fun! Thanks y’all!

[@mishu3271]

Impressive food reviews. You research and seek out cultural food experiences the same way I do and with such gusto! I’ll be rewatching your Merida vids before I travel there in January. Thank you.

[@AdventuresofAplusK]

Thank you! Awesome! Let us know if you have any questions!

[@steveblankenship5474]

You guys really did a bang up job with the food tour. The thing about Peru is the great food and one could continue with all kinds of dishes and treats over there. The giant corn throws you back at first and it is so good. I took some seeds and purple corn seeds home to grow. They sprouted but was an epic failure with producing anything. My wife can make couca but it’s not the same as Peru since the ingredients are so much better. Aqua Caliente has some great food stops and especially Arequipa, there you will find a candy factory there that is way better than Sees. Arequipa also has this cheese ice cream which is so good and I’ve only seen it there.

[@AdventuresofAplusK]

We tried to make a bunch of Peruvian dishes for our family when we got home. Some were better than others 😂 causa turned out pretty good Thanks for watching!

[@danthadon87]

I love the positive vibe, puts a smile on my face. And very well researched guys, well done, not like every other lima tourist video, you guys actually chose some great food spots consistently. Al toke pez has the best arroz con mariscos.

[@AdventuresofAplusK]

Thank you very much!

[@jericogatjens]

Hi, I'm peruvian, I really enjoyed your video, I'm very grateful you really took the time to investigate the best places to eat each of the dishes you tried. KZbinrs that come to Perú usually eat at crappy places because they just check in tripadvisor or ask some tour guide. I'm looking forward for your next Perú videos, try to go to Arequipa and any northern city like Piura or Chiclayo to have amazing food, even better than in Lima in some cases. Let me recomend you some restaurants for you to try in Lima: Cumpa, Cantarana, Osaka (you need to try also peruvian japanese fusion), and for desserts try Maga or Tentaciones. Have fun!

[@AdventuresofAplusK]

Thank you! We had a wonderful time. We’ve since left Peru but hopefully those recommendations can help other travelers. Thanks for watching!

[@sheafan1971]

All the food looks wonderful. Glad you enjoyed it

[@freddycunzza1385]

Welcome to my country. Amazing video. There are nice people, places to meet and the best # 1 Gastronomy in the World around 500 dishes minimum and more of thounsand maximun so delicious.Keep it up! Enjoying Peru.

[@AdventuresofAplusK]

We had an awesome time. Thanks and thanks for watching!

[@adolfobriceno1635]

A+K Awesome video. It shows that you did your homework because your hit the right restaurants and had the most popular dishes. Lucuma and Cherimoya are used for making desserts like cheesecakes, mousses, ice cream, milkshakes, etc. 😊

[@AdventuresofAplusK]

Lucuma was awesome in milkshakes! Thanks and thanks for watching!

[@adolfobriceno1635]

@@AdventuresofAplusK 👍

[@TimCowdell]

We always love watching your travel adventures, you both bring joy, thank you so much.

[@AdventuresofAplusK]

Thanks for watching!

[@DennisMacdonald-r7d]

Amazing video, yummy love ceviche

[@gian8134]

Thank you guys! That was a great food tour. Cheers from Miami.

[@gian8134]

@Gonzaloalmendarezn7602lllllll right, like ceviche, papa a la huancaina, causa, aji de gallina, anticuchos, ocopa, chupe, rocoto relleno, chanfainita, carapulcra, juane, pan con chicharron camote y salsa criolla, pulpo al olivo..... sigo? Cual es la copia, chef?

[@m.milagros1]

Everything looks delicious and impeccable, just seeing Peruvian cuisine makes my mouth water, very soon I will go to Peru and be able to eat all the gastronomy 🤤

[@AdventuresofAplusK]

Awesome! We hope you enjoy! Thanks for watching!

[@CatholicCatholic-i3n]

Muchas gracias por visitar al Perú. Thank you for visited Peru.

[@Mayeloski]

Glad you enjoyed everything you tried. Also I feel honoured that the first country on South America you guys visited is Peru!

[@earlmaclellan2504]

Hi ! Another amazing video! I just watched your Newfoundland one as well and it was amazing! I am planning a trip to NFLD in the summer of 2025, and you guys sealed my decision! You both are a happy couple and you guys flourish with personality, Perfect for showing us your adventures! Thanks again😁

[@AdventuresofAplusK]

Thank you so much!

[@LuisVasquez-kf8mj]

Loved the video!!! I live in Perú and the food here is amazing. When i travel i miss the food from my country. Thanks for visiting and trying a piece of our beautiful culture

[@AdventuresofAplusK]

We had a wonderful time and will be back!

[@ccfully]

Okay, I was impressed when Kathryn went out of her comfort zone and tried the ceviche & beef heart BUT THEN she did that pull-up! 🙌🏽😃💪🏽✨

[@AdventuresofAplusK]

She's a strong one!

[@Davies-z2j]

saludos mis amigos desde #Perú 🔥❣♥️❣🔥

[@brianboyd1239]

Peruvian food diary 🍽️❤️

[@a2080782]

Awesome!!!! You will be welcomed every time you come back. Your route around of the different restaurants is interesting, but as a friendly tip, you can enjoy and eat with the same quality for a cheaper cost in most of places even in Lima 👐👍🇵🇪

[@AdventuresofAplusK]

Yes we know you can find these dishes for cheaper else where, but we wanted to go to those places for their quality and atmosphere. Thanks and thanks for watching

[@mauriciolandeoisuiza3931]

La verdad que probaron lo mejor de lo mejor

[@hernanerasmo3907]

Guys...Thank very much for your review and definitely you love and respect the best cuisine in teh world.... hehehehe Thank you for visit Lima Perú...Thanks

[@AdventuresofAplusK]

Thank you and thanks for watching!

[@Star-u3t1l]

Food is our FAV too! great job, fried anything is good, ceviche or poke, both are great! I had many guinea pigs as pets when I was a kid, I don't think I could eat them.

[@AdventuresofAplusK]

Ceviche and poke are wonderful! We understand that about guinea pigs too

[@bobbafett7407]

So, so, so love your video so much 😍😍😍 jealous of not being able to taste that food (I am Peruvian living in Phoenix, AZ). For street food like anticuchos, picarones, pancita, choncholi, rachi, etc. I would recommend the neighborhood named Lince, it’s sort of in between Miraflores and Centro Historico, you will most likely find lines of people on those stands which is a good sign that the food is good 🤘 Hope you guys had the opportunity to try “arroz con pollo”, one of my all time favorite food 💪🤘 So glad you liked lucuma (addictive, isn’t it? 😂), ceviche, chifa, picarones, Inka Kola 🤘, and all the others 😎👍 Best wishes for your Cusco adventure 👍👍👍

[@AdventuresofAplusK]

The food was so so good! Thanks and thanks for watching!

[@stattravels8109]

K is getting so brave!!!!!

[@the.kate.outdoors]

Loving this video so far! I’ve had elk heart before and I get what you mean about the texture - it’s not “bad” but it’s definitely more dense

[@maureencathers341]

Don't be afraid of the guinea pig. It really is good and tasted like the dark meat of chickens to me. So glad you all are having fun, the food and people make Peru one of my favorite places I've ever been!

[@karenenglish4900]

Wait! What guinea pig?

[@maureencathers341]

@@karenenglish4900 Guinea pig is a fairly common thing to eat in Peru 😬 I’m sorry to be the bearer of bad news because they are cute! 😅

[@AdventuresofAplusK]

Ya we got dark meat chicken vibes from it. It was good, but not sure that we'd get it again. We loved our time in Peru!

[@josuedelacruz3367]

Lindos chicos

[@betto2017]

Delicious!!!!

[@fernandolino6493]

There are some dishes in Chifa with the same name as a Chinese food, but they are made in different way. The wanton soup for example has more meat, eggs, vegetables, and the broth taste a little bit different than the Chinese one, .Chaufa is very similar to the Cantonese version of fried rise...the Peruvian has more flavor in my opinion. Chifa has a lot of dishes that they don't exist in China, but of course they look Chinese.

[@AdventuresofAplusK]

Interesting. Thanks for sharing!

[@Kevin-oj2uo]

I live in the US and Chaufa is my favorite dish I didnt know it was Chinese inspired.

[@fernandolino6493]

@@Kevin-oj2uo it's not inspired....Chinese migrated to Peru more than 170 years ago and the cultures were mixed...for example in Peru we say "kion" for ginger and "Siyao" for soy sauce....those words come from China....in every Peruvian house you will find Siyao and kion.

[@cristiag1]

It really shows you did your research, as a Peruvian, I can say that you went to the right places. Anticuchos Bran it’s not very well known for tourists but has one of the best anticuchos in the country, the same with chifa Titi. I’m very pleased, most videos about food don’t show these restaurants.

[@AdventuresofAplusK]

Thank you and thanks for watching!

[@suzanneaydelotte801]

Really enjoyed seeing all the food! I laughed during the donut/bee part!

[@AdventuresofAplusK]

It was funny and stressful all at the same time! 😂

[@mikeprevost8650]

Those "bees" are yellowjacket wasps. They're about the nastiest of the flying stingers and can sting multiple times. They're attracted to sweet foods.

[@AdventuresofAplusK]

We're thankful they didn't sting us!

[@christianzelada2976]

soo cool video, one question, what camera used? the quality is amazing, thanks!!!

[@AdventuresofAplusK]

Thanks! You can see all of our gear here: adventuresofaplusk.com/gear/

[@CristoferHarts]

💖La comida #Peruana es deliciosa 🥘🍲🥙🥗🍛🥄😋🍷🥘❤ 🇵🇪

[@HopeLaFleur1975]

So you won’t eat olives, but you will eat a beef heart. 🙆‍♀️🙆‍♀️. 😂😂I’ll take the olives anytime thank you 😂😂😂Well, I am just blown away because I remember back in the day we would hear about people and how poor they were in Peru and we’d have to send money to them. It was always engrained at us at schools the poverty of Peru I guess it really has evolved and this looks amazing the food and we never thought of going to Peru ever ever as Canadians. We always think of Europe or travelling the United States or are even our own country but this is really amazing. He made me very hungry. Very very delicious. What a beautiful places. Thank you for sharing it.❤

[@maureencathers341]

I heard the same things growing up. We spent 10 days in Peru about 5 years ago and trust me, a lot of the people are still living in very bad conditions. The touristy parts of Lima don't show it, but once you get out into the suburbs of Lima or out of Lima totally and into the mountains, the poverty is still very much real. But the people are proud of what they have, work hard for it, love the tourists and are incredibly friendly so definitely do visit! We went with Tauck but Intrepid also do great tours there too. I've travelled extensively and Peru is one of the places I want to go back to so bad!

[@HopeLaFleur1975]

@@maureencathers341 well very interesting. I guess I didn’t know that it was just confusing because here we see a hotel and great food and I remember the poverty, but I would love to go too. Sounds good. Sounds really good. They are very nice people. I know a lot of Peruvian here in Canada and they are very hard-working and very humble people.❤

[@AdventuresofAplusK]

Yes you can keep the olives 😂 The areas we visited in Lima were nice, but as Maureen commented, yes there are definitely areas with lots of poverty and poor living conditions. But at the same time the people are very friendly, welcoming, and proud!

[@HopeLaFleur1975]

@@AdventuresofAplusKI like olives. But Pass on hearts. 😀

[@saralurobles5641]

casi me da un infarto cuando vi el costo de la papa rellena y la causa, pero de todas maneras debo recordar que lo comieron en un restaurante de lujo, me encanto el video, gracias por venir a mi pais, un abrazo grande

[@diegorojoh]

As a Peruvian and a Limeño, I congratulate you guys because you have visited all the places I would recommend to a friend coming from abroad. After that, you can go to more hidden gems (talking about mercados or restaurants), but you already have a good and true experience of Peruvian cuisine. Additionally, if bees come near your honey or food, it means the food is very good; bees are pickier than all of us and are very clean hahaha! Good checklist!

[@AdventuresofAplusK]

That's good to hear! Thanks and thanks for watching!

[@solrm2367]

Ceviche + camote =😋 Picarones =😋 Anticuchos. =😋 Ají de gallina =😋 Lomo saltado. =😋 Tallarin saltado. =😋 Arroz chaufa =😋

[@lulo5855]

Vienvenidos amigos ❤

[@diegoespinoza7515]

Felicitaciones, muy buen video gringos

[@MovieDude01]

My Dream Food Tour!!!!

[@lindacopeland3538]

I love Perú ❤️

[@fiorelahuaco1818]

For all foreigners, eat your lunch at the small restaurants called "menu" wich is soup or appetizer, the main dish and somethkng yo drink... they will be cheaper between 10 to 15 soles (depends on the location)

[@monicalau5736]

Best food not only in Latinamerica , in the world 😋

[@kwfown]

I thought you guys have been state side for the past few years 5:14?

[@AdventuresofAplusK]

We’ve been based in the states but over the past few years we’ve been to Mexico, Vietnam, Singapore, Germany, Finland, Estonia, Denmark, Sweden, and Canada! Along with our content in the US

[@maxQ08]

Don’t let Peru take you out of your comfort zone you might never leave Peru.

[@AdventuresofAplusK]

We had a wonderful time!

[@suekentmusic]

Katherine, I know you are not big on cats, but they sure do love you!

[@AdventuresofAplusK]

The cats do tend to gravitate toward her we've noticed!

[@jsprite123]

Inca Kola is usually drank alongside Peruvian dishes, it complements the food. While you can drink water, Coca Cola or even a beer while having a Peruvian dish, somehow Inca Kola adds that magical touch that is so revered by Peruvians.

[@ReApEr789456]

@2:15 Lucuma, AND a cute cat? I have to go there.

[@kennyi0]

🇵🇪!!!

[@andreloshon3344]

aaaah , mouth watering food,i have been to peru but i have never tried the donuts the one u said ,like oat meal and titi.....got to revisit . The airalo e-sim ,is it really a good travel app. or ru just saying so,because they sponsor ur video.🤔🤔🤔

[@AdventuresofAplusK]

We love Airalo and have used it on multiple trips. We would never promote a product or company that we don’t actually use and think is valuable. Over the last 6 years of this channel we have only had a handful of sponsors because we are extremely picky on who we will work with.

[@DoniNumeritos]

11:08 as a peruvian I agree sooo much with this part, I hate that things so bad bro

[@NoOverhead]

Olives are the worst. Great episode, guys!

[@nils-and-kat-devine]

I was too squicked out to try the guinea pig but thought for sure that you two would go for it.

[@AdventuresofAplusK]

Stay tuned for our next video 😃

[@benedavis6900]

You guys are brave! Love your channel!

[@jordannicholson8751]

Will you guys be visiting Cusco or the Nazca lines or Puma Punku? Edit: Okay, I watched until the end and heard you say you're going to Cusco.

[@freelanceraminulislam2024]

I have subscribed your KZbin channel your channel is very good .❣❣❣

[@wendysuperfan1014]

thanks A+K

[@dianadelahaye7660]

I have been in Lima. I did not do Food tour, but went to two amazing museums. The Gold museum is incredible! It has everything from history pieces from the military, mummies, ancient fabric found in tombs, incredibly erotic pottery and oh yeah, gold. Also the art museum, amazing art and historic pieces. Also went to Machi Pichu. That was beautiful and mind blowing.

[@AdventuresofAplusK]

The museums do look very interesting!

[@stephanieschmidt3987]

I can't believe you guys didn't try cuy (guinea pig), it's a Peruvian delicacy!

[@AdventuresofAplusK]

Stay tuned for the next video 😃

[@terrxOJ1409]

🤩🤩🤤🇵🇪🇵🇪

[@beethovensbeloved]

Inca Kola is made from a Peruvian herb called Yerba Luisa and it tastes much better from a glass bottle and if drunk to accompany Peruvian dishes. Coca Kola could not surpass the sales of Inca Kola in Peru so it bought 40% of the shares of Inka Cola.

[@AdventuresofAplusK]

Thanks for sharing!

[@CristobalArenas-qq1tn]

inka cola's original flavor comes from lemon verbena

[@renzobenites5865]

Y eso que hai mucho mas por probar 😅

[@AdventuresofAplusK]

Of course!

[@mariaclaudiacruz8071]

just one thing is CHIRIMOYA, here in Peru at least we called it that way.

[@lezzimars6061]

Some of the places you tried are good but they are now overatted, you can find better quality and taste for cheaper. For anyone willing to try the best dessert and other street food like Great picarones, anticuchos etc, go to Lima central by plaza de armas, plaza chabuca Granda.👌🏼👌🏼🇵🇪❤️ thanks for sharing your experience !

[@AdventuresofAplusK]

Everyone has their favorites 😃 all of the places we shared in this video are highly rated and loved on Google. We shared where we went and we enjoyed everything immensely Thanks for watching

[@nerfshaman]

Pro tip ask for the chancaca honey to be put apart in a little bag = no bees

[@AdventuresofAplusK]

Very smart move!

[@henryreyes1597]

😋😋😋

[@Every_State_Park]

🔥

[@danielrafuls3990]

I feel like pizza is also authentic Peruvian food. It was literally everywhere in that country and not just the tourist areas. There's no way you guys didn't eat pizza before leaving Peru 😂

[@AdventuresofAplusK]

Oh we had a good amount of pizza! 😂 even lomo saltado pizza!!

[@iendi998]

Pizza is not authentic peruvian food but we love it, that's why there is a lot of "Pizzerias and Trattorias".

[@usqki]

I can't with the Bees...

[@FrancoShinzato]

Great video but the immigration in Peru was from Japón and Chifa is a Japanese Peruvian fusion.

[@AdventuresofAplusK]

We haven’t read or been told that anywhere en.m.wikipedia.org/wiki/Chifa www.timeout.com/singapore/restaurants/chifa-explained-everything-you-need-to-know-about-this-underrated-peruvian-cuisine www.eatperu.com/peruvian-chinese-food-chifa/ We also read there was lots of Japanese immigration as well, but Chifa is a mix of Chinese and Peruvian cuisines

[@luantuse]

The chifa is Peruvian, it is very different to have Chinese influences, as are some ingredients, but that people say that the chifa food is Chinese....it is wrong, those flavors you will not find elsewhere..we know that fride rice is in many countries....but with that taste , I do not think you find

[@marce_mscr4510]

It‘s a fusion between cantonese-chinese and peruvian ❤

[@luzbelizario]

😋🤩

[@97rrb]

esa papa rellena a 49 soles, que bravos