By visiting Chau Doc market, a tourist can easily see more than 30 kinds of mam. Some kinds can be instant after adding some raw materials such as shrimp paste, Thai mam, ba khia (small sea crab) mam, mam tom (another kind of shrimp paste), mam tep (tiny shrimp paste), mam cong (fresh water small crab). Some must be processed through many stages such as mam sat, catfish mam, mam loc (blackfish sauce), anabas mam, mam tren, mam ca linh, mam ca chot, mam chuot, mam ca com (anchovy), mam ca thieu, mam ca long tong (rasbora), mam ca me vinh, mam ca tren la, mam ca tren mo, mam ca tren bau. Arriving in Chau Doc, tourists often buy mam ruot which was made initially from gut and spawn of ophiocephalus maculates and thus became rare.