There are several chilies used in Thai cooking. They come in a number of sizes and colors. If the type of chili specific in a particular recipe is unavailable, substitute with care...The smaller the chili, the hotter it is, and green chilies are hotter than the red ones of the same size. The quantity of chili used depends on the palate-always start with a little, and add more.
Thai Chili Peppers (PRIX KHEE NOO) : These are tiny red or green chilies used to add heat to the dish.
Dried chilies are also used in cooking and are called PRIK KHEE NOO HEANG.
Ground chili pepper is called PRIK KHEE NOO PON.
Tinned chilies may not be as hot as the fresh ones, so check after adding.
Jalapeno Pepper ( PRIK CHEE FA) : These are large red or green chilies used in milder dishes. Remove the seed to reduce the heat further.
The large pale green chilies are not hot and can be used like capsicums