Pork tenderloin (better to take it the tenderloin) cut into slices of thickness 2.5-3 cm, then carefully (!) repulse. The meat should be almost transparent. When the meat will obzhivatjsya, it's a bit "cringe" and not be thin.

Very finely as possible, cut the onion. Meat sprinkle with salt and pepper on one half spread chopped onion (about a teaspoon) and a small piece of butter (for richness). Then cover with the second half, it turns out "pocket" with filling. Slightly press down with hand to oil is hurting (of course, the butter should be soft). Whisk one egg. "Pockets" to dip first in egg, then dip them in flour and fry in vegetable oil on high heat just a couple minutes on each side. By the way, the onions time to steam, on the teeth crunches, don't worry ))) But it needs to be chopped really finely.

Here is the meat turns out! Pork tenderloin itself is very gentle. The butter adds richness. And the batter keeps all the juices inside the "pocket". Very simple and very tasty. Hopefully, someone this recipe will come in handy. PS don't know if something this recipe to Arzamas, but the name did not change )))