2Transfer the meat to a plastic bottle with the top cut off and add 1 liter of sparkling water. Let it soak for 20 minutes.
3In a large saucepan over medium to low heat, add 100 grams of unsalted butter and a drizzle of vegetable oil.
4Add all the meat and sauté until golden brown.
5Remove the meat and add one onion, three cloves of garlic, 50 grams of fresh mushrooms, 100 grams of bacon, 1 teaspoon of salt, a pinch of black pepper, 1 teaspoon of sweet paprika, 2 tablespoons of mustard, and 40 ml of soy sauce to the same pan.
6Add 200 ml of water and the prepared meat. Let everything cook for 25 minutes.
7Dissolve 1 tablespoon of corn starch in 50 ml of water and add it to the beef stew.