Mix Stage 1: ingredients: together well in a bowl then stir in the prawns. Cover and pop into the fridge.
Stage 2: While the prawns are marinating, cover the lentils with 1-2 cm of water in a pan. Bring to the boil then simmer for about 20 minutes, adding more water if necessary.
Mix Stage 3: ingredients (except the sesame seeds) together in a large cup. Drain the lentils and transfer to a mixing bowl. Pour in the mixture from the cup, add the sesame seeds then stir together well. Cover and keep warm.
Really heat a wok then fry just the prawns for a couple of minutes each side before adding the marinade and bringing briefly to the boil.
Fold the coriander into the lentils then serve a portion, covered with some of the prawns & juices, onto each plate.