Preheat over to 250 Degrees
Heat Canola, Peanut or whatever oil you prefer to fry in to cast iron skillet 1/4" deep
Using food proccesor with large grating disc or hand grater grate onion and potatoes
Using cheesclotch or clean dish towel wrap and squeeze out as much water as possible
Add bread crumbs, eggs, baking powder salt and pepper
Working in batches Patty by hand and pan fry 5 minutes per side until golden.
Transfer to paper towel and wipe off excess oil
Put on baking rack on baking sheet and place in oven until all are done.