Method
Yum is Thai for "Spicy Salad" (roughly translated). Yum usually consists of a type of meat or seafood, and basically fish sauce, lemon juice and chili. This particular variation is prepared with mussel meat.
Thai people usually eat yum-type dishes as an appetizer or snack, but it is not uncommon to serve as a part of the main meal.
Clean mussels, and rinse them in water. Using a small pot, bring some water to a boil, and add in the mussels. Boil them for a few minutes until done. Strain mussels and put aside.
Remove the water from the pot, and add in all of the other items, followed by the mussels, and stir.