Cut a 1.5 kg piece of beef
Transfer the beef to a bowl or plastic bottle with the top cut off
Add 1 liter of sparkling water and let it soak for 20 minutes
In a large saucepan over medium to low heat, add 100 g of unsalted butter and a drizzle of vegetable oil
Add the beef and sauté until golden brown
Remove the beef from the pan
In the same pan, add 1 onion, 3 cloves of garlic, 50 g of fresh mushrooms, and 100 g of bacon
Add 1 teaspoon of salt, a pinch of black pepper, 1 teaspoon of sweet paprika, 2 tablespoons of mustard, and 40 mL of soy sauce
Add 200 mL of water and the beef we prepared earlier
Let everything cook for 25 minutes
Dissolve 1 tablespoon of corn starch in 50 mL of water and add it to the beef stew
Finish by adding green onions to taste
