Melt the butter in a heavy pot at low heat. As soon as the butter is runny, add garlic and seasoning and tilt the pot to and fro till the butter has completely melted. Add the rest of the ingredients - except for the prawns - and stir thoroughly with a whisk.
Cook for about 15 min. at a low heat to allow the flavours to blend. Add the prawns and cook for 5-7 min. till they curl up. Remove from heat and serve in a heat resistant bowl.
