Take a piece of pork. I want to note that lean meat is very tender and soft. Therefore, the layer of fat is better to leave, and after roasting, if necessary, to remove. Slice the meat across the grain pieces of a thickness of 2-2.5 see If You have a device for pounding meat with sharp blades, use them. A normal hammer will not work, we do not aim to make chops.

Well pepper the meat on both sides. Mix 4 tbsp soy sauce with 2 tablespoons of brandy and 0.5 tbsp balsamic and pour over meat. Mix thoroughly so that each piece was covered with marinade. As an option: possible to cut away the meat marinade with the help of a syringe. Leave in a cool place for at least 2 hours.

To make the sauce. Onion peel and finely chop.

In a pan heat 1 tbsp oil. Add the onions, season with salt and pepper and sauté on medium heat until Golden brown. Very carefully (!) add 3 tbsp of brandy.

When the liquid from the alcohol evaporated, add the broth, cook another 3 minutes. Remove the sauce from heat, add 1 tbsp of cold butter and stir until it is completely dissolved. Optional sauce can be made more homogenous using the blender.

In a pan on medium heat, heat 1 tbsp and 2 tbsp butter. Fry the pork for 3 minutes on each side. Not Iriarte, otherwise the meat will be dry! Steaks must be fully cooked.

To give the meat to "rest", i.e. to stand under the lid closed a few minutes after cooking. To meat submit a sauce.