Instructions

Step 1
Heat sufficient oil in a wok on medium heat.
Step 2
Chop ginger and garlic finely. Halve the prawns vertically and place in a bowl. Add egg white, salt and cornstarch, and mix well.
Step 3
Put half the prawns in the hot oil and deep fry on medium heat till golden.
Step 4
Meanwhile heat 2 tbsps oil in a non stick pan, add ginger and garlic and sauté. Add tomato ketchup and mix well.
Step 5
Drain the prawns on absorbent paper. Similarly deep fry the rest of the prawns and drain on absorbent paper.
Step 6
Add ½ cup water to the other pan and mix. Add lemon zest and crushed red chillies and mix. Add vinegar and mix.
Step 7
Transfer the prawns into a serving dish, drizzle the sauce over them and serve immediately.