Wash the prawns, dab dry. Peel ginger and grate finely. Peel garlic and chop finely. Clean, wash and finely chop the chillies. Cut coriander roots from the stalks, wash, dab dry and chop finely.
Peel and finely dice the shallots. Clean and wash spring onions and cut them diagonally into approx. 2 cm long pieces. Wash the coriander and pluck the leaves from the stems. Heat the oil in a wok or deep frying pan.
Put the prawns in the hot oil and fry them for about 2 minutes, stirring constantly. Take out. Set the hotplate to low heat. Add ginger, garlic, chillies and coriander roots and cook everything stirring constantly, but do not let it get brown.
Add ketchup, all sauces and sugar and bring to the boil. Add the prawns and heat for about 3 minutes. Add shallots for the last minute. Garnish chili prawns with spring onions and coriander leaves.