While in Phra Khanong market, the only Burmese market I know of in Bangkok, I bought the following seemingly-to-me similar products: brown to black dried tea leaves (pictured below). I drank a small glass of hot tea made from these leaves, and it had a very mild and comforting taste. What is this Burmese/Myanmmarese brown-to-black dried tea leaf? br/> What is the English name, please?   
These could be leaves to make "Lahpet" (https://en.wikipedia.org/wiki/Lahpet), so perhaps you can drink them too? 