Ubi Jalar: The Sweet Potato Spectrum

Sweet potato (*Ipomoea batatas*) — ubi jalar — is one of Indonesia's most important food security crops, grown across every major island from sea level to 2,000 metres altitude. It was introduced by Portuguese traders in the 16th century from South America (the species originated in the Andes) and rapidly absorbed into Indonesian agriculture and cuisine. The Indonesian sweet potato spectrum is far more diverse than Western commerce represents: orange-fleshed (the familiar Western variety), yellow-fleshed, white-fleshed, and the culturally significant purple-fleshed variety (ubi ungu — *Ipomoea batatas* var. Ayamurasaki and related cultivars) that has its own culinary applications and its own visual identity. Papua's highland tribes have cultivated sweet potato for 4,000+ years (the crop arrived there via independent Polynesian introduction) and the tuber has been a caloric foundation of highland Papuan culture to an extent unmatched elsewhere in Indonesia.

Ubi Jalar — The Rainbow of Indonesian Sweet Potato

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