I am a latke purist, and I like my latkes to be only from grated or food-processed potatoes, onions, salt, pepper, and only if necessary a little matzah meal or flour if it is too loose. I also add a little bit of lemon juice (does not affect the taste in any way), to help keep the grated potatoes white. Basically, it’s a kugel recipe, just fried instead of poured into a pan.