Clean and roughly slice the potatoes, zucchini and carrots. Finely chop the onions and add them. Add the spices, the spoon of sour cream and the chives cut into rolls. Add the eggs, flour and mozzarella to the vegetable mixture and mix well.
Heat the oil in a pan and add a hand-sized, 5 mm thick vegetable buffer with a tablespoon and fry until golden brown.