Daun singkong (cassava leaf, *Manihot esculenta*) is the most consumed leafy vegetable in Indonesia after water spinach (kangkung) — available wherever cassava grows, which is to say throughout the tropics of the archipelago. While the cassava tuber is the caloric staple in many rural Indonesian communities, the leaves are simultaneously harvested as a protein-rich vegetable, providing essential amino acids that the tuber itself lacks. This dual-harvest model — tuber for starch, leaf for protein — made cassava a food security crop of remarkable efficiency during periods of scarcity. The Japanese occupation (1942–1945), when rice availability collapsed across Java, saw cassava leaf consumption expand dramatically as communities relied on the plant as a near-complete food source.
Daun Singkong — Cassava Leaf, The Protein Vegetable of the Poor
Indonesian Deep Extraction — Batch 14