Because the formula is usually a trade secret. I won't teach you easily. Of course, you can apply to be an apprentice in the famous local mala Tang kitchen or something, and you can learn it secretly. The best way is to study in the school system. General schools will give you all the skills without reservation. You can study with confidence and don't worry about not learning anything.
origin
Mala Tang originated in Niuhua Town, wutongqiao district, Leshan City, Sichuan Province, which is close to Minjiang River. Initially, boatmen and trackers created a simple and unique way to eat mala Tang.
In the Chuanjiang River Basin from Chengdu to the Three Gorges, due to the rapid flow of water, railway tracks have become an indispensable landscape. While pulling fibers, they set up stones and pottery pots by the river, picked up some branches to make a fire, and scooped up buckets of river water. Everything is made of local materials. If there are vegetables, they will take out some wild vegetables to make up the number, and then put spices such as sea pepper and pepper into the sea to rinse and eat.