Fermentation is a food processing technique that allows fish to be preserved for a longer period of time. Ikan pekasam, a local traditional fermented fish, is an example of many different types of fermented food products in Malaysia. Ikan pekasam, when fried, acts as an appetizer especially when it is eaten with hot rice together with fried chilies and onions. Other than containing high amounts of proteins, the bone which is also edible, contains minerals as well.