Bunga telang (*Clitoria ternatea*, butterfly pea flower) is a flowering vine indigenous to Southeast Asia and documented in Malay and Javanese traditional medicine as a memory-enhancing and stress-reducing herb. Its culinary significance, however, derives almost entirely from a single property: the most vivid natural blue-to-purple food colouring available without synthetic dye. The intense blue of fresh butterfly pea flowers (from anthocyanin pigments, specifically delphinidin-3,5-glucoside) is pH-sensitive — blue in neutral or alkaline conditions, shifting to purple and pink at acidic pH. This colour-shifting property produces applications in cooking that are both visually spectacular and conceptually interesting: a blue rice (nasi kerabu in Malaysian Kelantanese tradition), a blue cake, a cocktail that turns purple on addition of lemon juice. · Preparation
Bunga Telang: The Blue Dye connects to similar techniques: Saffron (natural colouring as primary function, flavour secondary — though saffr.
This is the professional-depth technique entry for Bunga Telang: The Blue Dye, including full quality hierarchy, species precision, and cross-cuisine parallels.
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