tsio̍h-hue-ko石花膏

red algae of species

red algae of species, used to make agar

English Wiktionary, “石花膏” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%9F%B3%E8%8A%B1%E8%86%8F · confidence: Medium (Wiktionary, Hokkien)