Chinese Medicinal Soup — Double-Boiled Traditions (Dun Tang / 炖汤)
Guangdong Province — Cantonese medicinal food tradition
Cantonese double-boiled soups (dun tang) are a 3–4 hour commitment producing intensely concentrated medicinal broths. The ingredients are sealed inside a covered ceramic pot which sits inside a larger pot of boiling water — the double-boiler method extracts maximum compounds without agitation. Typical preparations: old hen with ginseng and red dates; pork ribs with lotus root and red bean; sea cucumber and snow fungus soup.