I love potato pancakes. It turns out their preparation does not involve rocket science. Grate four potatoes and one onion (prepare to cry). Mix with two eggs, a few tbsp of flour, and a whole heck of a lot of salt and pepper. Fry large, flattened spoonfuls of the mixture in plenty of hot olive oil until very dark brown, turn, and make the other side dark brown too. Serve with sour cream and smoked fish, or apple sauce. These quantities make about twelve pancakes (serves about four).
As you proceed with the frying (with two pans doing two or three at a time), you can preserve the cooked pancakes on paper towels in a 170 F (80 C) oven.
An expert variation is to drain the shredded potato, let the starch settle out of the drained liquid, and mix it back in, but that may qualify as rocket science. One night we added shredded celery root, to good effect.