Case Size: 1/250 g. Two Happy Swallow Belacan Shrimp Paste is a pungent, savory paste used in Southeast Asian cooking. Two Happy Swallow Belacan Shrimp Paste (250 g) offers a bold, savory flavor perfect for enhancing soups, curries, and sauces. It’s an essential ingredient in many Southeast Asian dishes for a deep umami kick.