Doraji-Namul — Bellflower Root with Salt Squeeze (도라지나물)

Korean mountain foraging tradition; Platycodon grandiflorus is native to Korea, China, and Japan and has been documented in Korean medicinal texts since the Three Kingdoms period

Doraji-namul (도라지나물) uses the root of Platycodon grandiflorus (the balloon flower), a medicinal-culinary plant with a distinctive pleasant bitterness prized in Korean cooking. The root is julienned or shredded, salted, and squeezed repeatedly to remove the bitter saponins before being stir-fried or served raw as a white banchan with sesame oil and salt, or a spiced version with gochugaru. The squeezed texture of properly prepared doraji is silky and tender with a remaining mild bitterness that is considered tonifying in Korean traditional medicine (한의학). It appears in bibimbap, as a standalone banchan, and in festive mixed vegetable dishes.

• Parallels Japanese kikyo (桔梗, same Platycodon root prepared as pickles or namul) and Chinese jie geng preparations — all East Asian traditions of edible Platycodon root — but the salt-squeeze bitterness reduction technique and sesame-oil finishing are distinctly Korean

Doraji-namul's mild bitterness is the palate-complexity element in bibimbap's colour wheel of flavours — where spinach provides mild freshness and gosari provides depth, doraji provides the slight bitter counterpoint that prevents the bowl from feeling monotonous.