Combine cornstarch, flour, baking powder, egg, water, salt, and ground black pepper then stir until diluted.
Add the shrimps and mung bean sprouts in the mixture and lightly stir to distribute.
Heat a frying pan and pour-in the cooking oil.
Once the oil is hot enough, scoop about 2 to 3 tablespoons of the mixture and quickly (but cautiously) drop it in hot oil.
Cook each side for 2 to 3 minutes or until the color turns golden brown. Repeat this step until the entire mixture is consumed.Note: Cooking time may vary. Remove the deep-fried ukoy from the pan and place in a plate lined with paper towel to absorb the oil.
Remove the paper towel and serve. Enjoy!