This is a version of the amazing Kampot green pepper crab we had in Cambodia. It is one of my all-time favourite dishes. This variation with prawns works well as it’s hard to get soft-shell crabs. Thai shops sell fresh green peppercorns on the stem, or you can buy them brined in little jars in the supermarket.This is a version of the amazing Kampot green pepper crab we had in Cambodia. It is one of my all-time favourite dishes. This variation with prawns works well as it’s hard to get soft-shell crabs. Thai shops sell fresh green peppercorns on the stem, or you can buy them brined in little jars in the supermarket.