Deborah on the Vegsource Recipe Board gave me this recipe years ago.
1 cup flour
1/4 cup cornstarch
1 tsp. baking powder
1 tsp. oil
1/2 tsp. sugar (optional)
1/4 tsp. salt
ice water
oil for frying
Vegetables (thin slices of squash, bell pepper, eggplant, broccoli and cauliflower florets or whole green beans.)
Mix flour, cornstarch, salt, and baking powder. Add ice water slowly, stirring until mixture is like a thick pancake batter. Dip vegetables into batter, shake off excess. Fry vegetables in oil heated to 350 degrees until light brown and crispy. drain on paper towels.