Cook With Your Tongue
The adage of Thai cooking is simple:
Cook with your tongue!
In traditional Thai cuisine, recipes are more like guidelines, and each chef is free to deviate to compensate for a particular ingredient’s flavor changes or to fit a new locale.
In fact, many Thai chefs have difficulty with western cooking because in Thailand, there are no measuring cups.
Thai chefs learn to cook by watching and helping in the kitchen… by “internalizing the system” instead of by following written instructions.
This is why you will find such a wide variation between restaurants.