Wash the potatoes thoroughly, peel them, and julienne them.
Finely chop the onion and carrot.
In a bowl, combine the potatoes, onion, carrot, salt, black pepper, and flour.
Heat cooking oil in a pan and spread the batter thinly.
Cook until both sides are golden brown, then flip and cook the other side.
Transfer the finished potato pancake to a plate and serve.