1. You can't use metal for decocting, that is to say, you can't use a pot, and a chemical reaction will occur. It is best not to use stainless steel, but to use purple sand or ceramics.
If it is a decoction, you must buy a bigger one. I bought a 3.3L one, and it feels just right. Personally, I think it is more suitable between 3L and 4L, which will leave room and should not easily overflow.
I am satisfied with the one I bought online, and it works well, but it can't be cheap. The quality of this frying pan should be at least 100, and mine is 13 1 yuan, which is medium. You can look for it online. Be careful. no problem