Cut the red pepper finely, Squeeze the juice of one lime and wash the shrimps, pat the shrimps dry. Cut the lemongrass in quarter lengthwise.
Pierce the prawns with a skewer make sure there are 6 shrimps ons a skewer.
Mix the lime juice with oil, fish sauce, red pepper, coriander and garlic in a bowl. Sprinkle this mix over the shrimp skewers. Allow the skewers to marinate in the refrigerator for at least 1 hour.
Grease the grill pan well and heat until it is piping hot. Grill the shrimp skewers for about 5 minutes until tender.
Sprinkle some coriander as a garnish over the shrimp skewers.