Peel the kohlrabi, cut in half and cut into thin slices. Whisk the eggs with about 5 tablespoons of milk and a pinch of salt and pepper each. Roll the kohlrabi slices first in flour, then in the egg milk and then in the breadcrumbs. Heat the oil and fry the kohlrabi until golden brown. Keep warm in the oven at approx. 70 degrees.
For the sauce, mix the sour cream, whipped cream and the chopped herbs to a creamy sauce. Season with pressed garlic, salt and pepper (not too strong, because the sauce is very intense).
Serve the kohlrabi with the sauce and lettuce of the season.