For the potato zucchini pancakes peel and grate potato, zucchini peeled or unpeeled grate the same, grate the onion.
Squeeze grated potatoes and zucchini a little and remove the water. Add egg, flour, sour cream, season with salt and pepper and put with a tablespoon in a pan with hot oil small piles, flatten them a little and fry out until golden brown.