Singapore chilli king prawns Author: Graham Sharp Serves: 4 Ingredients 500ml vegetable oil 3 large banana shallots, thinly sliced 500g king prawns, peeled to tail 6 tbsp fresh ginger, peeled and finely chopped 6 cloves garlic, finely chopped 6 red chillies, finely chopped 50ml water 3 tbsp dark soy sauce 4 tbsp tomato ketchup