01 - Combine flour, cornstarch, baking powder, salt, and pepper in a large mixing bowl. Gradually add cold water while whisking until smooth and thick batter forms.
02 - Add mung bean sprouts, julienned sweet potato, carrot, sliced onion, and chopped spring onions to the batter. Mix thoroughly to coat all vegetables evenly.
03 - Gently fold cleaned shrimps into the batter and vegetable mixture, being careful not to break the shrimp.
04 - Pour vegetable oil into a deep frying pan and heat over medium-high heat until hot but not smoking.
05 - Scoop approximately 1/4 cup of mixture and carefully drop into hot oil. Flatten lightly with back of spoon to form disc shape. Fry 2-3 fritters at a time to prevent overcrowding.
06 - Cook each fritter for 3-4 minutes per side until golden brown and crispy throughout.
07 - Remove fritters using slotted spoon and drain on paper towels to absorb excess oil.
08 - Combine vinegar, minced garlic, chopped red chili, and salt in small bowl. Stir until salt dissolves.
09 - Arrange Ukoy on serving plate and serve immediately with prepared dipping sauce while hot and crispy.