Wash the meat and dab dry. Wash sage and pat dry. Whisk egg whites. Put the cutlets next to each other, brush with egg white, sprinkle with salt and pepper and cover each cutlet with 1 sage leaf.
Fold the schnitzel in half and press on. Heat oil in a coated pan, fry escalopes on both sides until golden brown and season with salt. Arrange escalopes with remaining sage on a plate.