2 potatoes or onions
3/4 teaspoon salt, or enough to taste
1/2-3/4 cup flour (can use 1/2 cup flour + 1 tablespoon cornmeal)
1/4-1/2 teaspoon chili powder
1/8 teaspoon baking soda
2 teaspoons oil
Peel the potatoes or onions and slice crossways in very thin (1/8 inch) slices.
Mix rest of ingredients with sufficient water to make a thick batter.
Put vegetable oil in a deep pan, heat well, and then reduce heat.
Dip prepared vegetable slices in the batter and deep fry until golden brown.
Remove from oil and drain on paper towel and serve hot. (Ketchup is optional for dipping.)