12oz.shrimp or tiger prawnspeeled, deveined, head and shells reserved
1lemongrass stalkcut into 3-inch pieces, lightly smashed
3slicesfresh galangal
6bruised kaffir lime leaves
6Thai chiliescrushed (bird's eye chilies)
6fresh oyster mushroomschopped
2tablespoonsThai roasted chili pastenam prik pao
2tablespoonschili paste oilnam prik pao oil
3teaspoonsfish sauce
3 1/2tablespoonsfresh lime juice
Cilantro leaves for garnishoptional
Instructions
Boil 3 cups of water in a pot. Add the reserved shrimp heads and shells to create a shrimp stock. Simmer until the stock turns slightly orange, pressing the heads to release the juice. Reduce the stock to 2 1/2 cups and strain out the solids.
Increase the heat to high and add lemongrass, galangal, kaffir lime leaves, Thai chilies, mushrooms, Thai roasted chili paste, and chili paste oil to the shrimp stock. Bring it to a rolling boil.
Add the peeled and deveined shrimp and fish sauce. Cook until the shrimp are done, then stir in the lime juice.
Pour the soup into bowls and optionally garnish with cilantro leaves.