400 grams (about 1 lb) boneless chicken meat, diced
3 cups chicken stock
100 grams (3.5 oz) straw mushrooms, halved
6 cherry tomatoes
1 fresh lemongrass stem, cut into short lengths
2–3 kaffir lime leaves, torn
3 tbsp Thai fish sauce
4 tbsp fresh lime juice
½ tsp sugar
5–6 hot fresh Thai chilies, just broken with pestle
Place the stock in a pot, add the lemongrass and kaffir lime leaves, and bring to boil over medium heat.
Add the chicken meat, mushroom, fish sauce, lime juice, and sugar; cook slowly and uncovered for 10 minutes. Do not stir.
10 minutes
Add the tomatoes and chilies and cook for 5 more minutes. Remove from heat.
Serve with steamed jasmine rice.