Belacan (pronounced buh-LAH-chan) is one of the most important, and by far, the most pungent ingredient in Malaysian cookery. Unlike the oily, garlicky shrimp paste used in Thai curries, belacan is a hardened block of shrimp paste, made from tiny shrimp mixed with salt and fermented. The fermented paste is then ground into a smoother paste, then sun dried, shaped into blocks, and allowed to ferment again. The resulting blocks are chalky and only slightly moist. Powerful in both smell and taste, belacan is always toasted and used in small quantities, providing a savory depth to curries and pastes.