Bambangan is huge by mango standards, often weighing close to a kilogram, and its thick, rough brown skin has to be cut away with a knife to reach the bright orange flesh inside.
The flesh and grated seed of the bambangan, a large wild mango native to Borneo, are salted and left to ferment into a pungent, sour-savory condiment. Sabah markets sell it in jars alongside other native pickles, and it's often stirred into hinava for extra tang.