@@hdc9641 I heard that in Korea, it is considered polite to leave some of your food behind, as it shows that you have been treated with so much food that you cannot finish it all. This is also widely known among Japanese people. Nowadays, there is a food waste problem, so a Korean friend of mine told me that it is better to eat all of the food you choose. 韓国では、食べ切れないほどの沢山の食事とおもてなしを受けました、という意味で少し残すのが礼儀だという文化であると聞きました。そしてそれが日本人にも広く知られています。 現在は食品の廃棄問題があり、自身で選んだ食事は残さず食べた方が良いと韓国人の友人が教えてくれました。