Beef steak with acid and garlic with mushroom sauce

Ingredients
Half a kilo of meat cutlets exclusively from thigh meat (sheep or veal)
A teaspoon of black pepper
60 g butter.. 3 small pieces..
3 tablespoons oil
150 g fresh or canned mushrooms
Small onions, cut in half
Small finely chopped onion
A tablespoon and a half of flour
A cup and a half of sharhat broth.
Salt, paprika, dried coriander.
French fries cut into circles
Juice of two lemons
A tablespoon of crushed garlic
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