Line your mixing bowl with a kitchen towel or a few paper towels. Grate your potato, onion, zucchini, and carrot into the bowl. Grab the corners of your towel(s) together and squeeze out excess liquid over a sink. Place grated mixture back in bowl and add salt, pepper and a 1/2 cup of the flour mix. Stir to combine. Add more flour if needed until mixture holds together when pressed with hands.

In a fry pan, heat oil over medium high heat. Drop mixture into pan in 1/4 cupfuls, and flatten with spatula. Cook each side 3-4 minutes. Remove and drain on paper-towel lined plate. Repeat with remaining mixture, sprinkle with more salt and pepper and serve immediately.