Dried shrimp paste

Dried shrimp paste (trasi) is a dense mixture of fermented ground shrimp with a very strong odor that may be offensive to some. Also known by its Malay name, belachan, it is sold in dried blocks that range in color from caramel to dark brown. It should be roasted before use—either wrapped in foil and dry-roasted in a wok or skillet, or toasted over a gas flame on the end of a fork or back of a spoon—to enhance its flavor and kill bacteria. In some recipes, dried shrimp paste is ground with the rest of the ingredients and fried in oil without toasting.