1. In a food processor, finely grate potatoes (don't liquefy, leave some texture). Transfer to a colander to eliminate excess liquid. Transfer to a large bowl. Finely grate onions, and mix 1 1/2 cups into potatoes.

2. Add eggs, baking powder, 3/4 cup corn oil, flour, salt, and pepper. Stir to combine. Fold in matzo meal, blending well.

3. Heat remaining 1/2 cup corn oil in a deep skillet over low heat. With a large kitchen spoon, drop batter into pan, creating pancakes about 3 1/2 inches in diameter; be careful not to crowd them. Fry until underside is a deep golden brown, 3 to 4 minutes. Turn and fry for 1 to 2 minutes more. Repeat with remaining batter. Drain latkes on a paper towel-lined baking sheet. Serve with applesauce and/or sour cream.