Make the shrimp: Peel the shrimp but leave the shells on the tails. Devein, wash thoroughly under running water, and drain well in a colander. Carefully slit each shrimp lengthwise without cutting all the way through. Flatten each shrimp just enough to make it look like a butterfly. Pat dry and put in a bowl.
Add the ginger paste, garlic paste, salt, and lemon jui