Wash and clean vegetables. Peel the potatoes, carrots and kohlrabi, grate everything, including the zucchini. Halve the sausages lengthways, then cut across into 1 cm wide slices. Mix everything with eggs and flour, season with salt, pepper and nutmeg.
Mix the sour cream and mustard, season with salt and pepper.
Heat the clarified butter in a pan and fry the buffer in portions. Possibly keep warm in the oven at 100 degrees.
Arrange the vegetable pancakes on plates. Add 1 to 2 tablespoons of sour cream dip to each of the plates. Sprinkle some ketchup on top and roughly marble with a wooden stick.