Add onion and garlic cook over low heat until tender but not brown
Turn into mixing bowl cool Stir in egg yolks mixing to blend well
Combine flour salt pepper and chili powder
Stir into onion mixture
Stir in corn Peel and grate potatoes place in cold water for 5 minutes Squeeze as dry as possible then drain thoroughly on paper towels Beat egg whites with cream of tartar until stiff but not dry
Add potatoes to corn mixture blend well
Fold in egg whites
In skillet heat about 14 inch oil
Form batter into 3 inch pancakes Cook until brown flip over