Finely chop the onions and sauté briefly in a saucepan with a little oil. Add sour cream, pressed garlic, herbs and mustard, bring to the boil briefly and simmer gently for 5 minutes. Take off the stove and let it cool down.
Knock the schnitzel (preferably with the bottom of a pan), salt and pepper, turn both sides first in flour, then in the egg and finally in the breadcrumbs and fry until golden in a pan with not too little fat. Arrange schnitzel on plates and pour sauce over them.
There is also a lemon wedge and parsley potatoes. French fries, fried potatoes or croquettes also go well with it. A fresh mixed salad of the season rounds off the dish.
Tip: For the original recipe, it is advisable to prepare the sauce about an hour or two before the meal, but it is also a pleasure warm or hot. Fresh herbs optimize the taste of sour cream mixture.