Covered shrimps and let them defrost in the refrigerator for about 3 hours.
Wash the coriander and dab dry. Cut off the roots and chop roughly. Peel and chop the garlic. Crush the coriander roots, garlic, peppercorns and 1 pinch of salt in a mortar to form a paste.
Mix 2 tablespoons of water, about 1 teaspoon of sugar, soy and oyster sauce. Peel and wash the shrimps, dab dry.
Heat the oil in a wok or large frying pan. Stir-fry the prawns for 2-3 minutes. Remove. Add the coriander paste to the frying oil and fry for 1-2 minutes until golden yellow and fragrant.
Add the prawns and soy sauce mixture and cook for 1-2 minutes while stirring.
Clean and wash the chillies and cut them into thin rings with the seeds. Coarsely chop the coriander leaves. Arrange the prawns with coriander and chilli. Jasmine rice tastes good with it.