Research the making of "Makla ". There is supposedly some good things to say about their tobacco choice re low " bad things" but strong good things. It sold as chew but I pouch it and put it under my top back lip. It uses edible lime mainly as the thing that makes your mouth absorb the goodies. Not for making WTA. But if you research it you might find out what tobacco they do use and how it's dried and all that
I spent a few hours last night trying to find stains of tobacco with high alkaloid content and low nitrosamine content. They don't really have it arranged that way. Does anyone knows where this info could be reasonably found? The closest thing I saw was on a seed sellers website with nicotine ratings.