A Hangzhou clear soup of West Lake water shield — the young furled leaves and shoots of Brasenia, each sheathed in a clear gel — floated in a light chicken stock with shredded chicken breast and Jinhua ham. Jade-green, silky, and slippery, it is one of Zhejiang's defining banquet soups, also called ji huo chun cai tang (chicken-and-ham water shield soup).
The dish realizes one of China's most cited literary allusions. The 'Book of Jin' (Jin Shu) biography of Zhang Han, a Wu native serving in Luoyang under the Western Jin, records that when the autumn wind rose he longed for the water-shield soup (chun geng), wild-rice shoots, and sliced perch of his Wu homeland, resigned his post, and drove home — the origin of chun lu zhi si, 'longing for water shield and perch,' a byword for homesickness. (The earlier 'Shishuo Xinyu' names only the wild-rice shoots and perch; the 'Book of Jin' added the water shield, which later tradition fixed.) The allusion is to the water-shield soup of the wider Wu / Jiangnan region and long predates this specific dish; West Lake Water Shield Soup is the modern Hangzhou banquet form. Its precise invention is undocumented, but West Lake, Xiaoshan's Xianghu lake, and Lake Tai are the renowned water-shield waters, and the soup is a standard of the modern Hangzhou (Hang-bang) repertoire.
The first taste is the slip: each leaf is wrapped in a clear, faintly cool gel that slides on the tongue and is impossible to chew, so you let it go down whole. Under it the broth is clean and light — savory but transparent, never greasy — and through it run the tender shreds of chicken breast and the deeper, salt-cured note of Jinhua ham. The water shield itself is almost flavorless; it is texture, the broth is taste.
The slipperiness is real chemistry: the young leaves and shoots of water shield are coated in a transparent mucilage that is largely polysaccharide (both alkali-soluble acidic and hot-water-soluble fractions), the same hydrated gel that makes the plant about 97 percent water. Brief blanching — the leaves go in and come straight out, well under a minute — sets the green and warms them without dissolving or toughening that gel; longer cooking would slacken the coating and dull the color. The soup is built as a clear stock (qing tang), the chicken simmered and skimmed so it stays transparent and is never thickened with starch, which lets the gel read on the palate. The savor comes from umami synergy: free glutamate from the chicken stock meets inosinate from the chicken and the aged ham, and the two amplify each other far beyond their sum — the reason a near-flavorless green tastes so full in this broth.
Variations
The classic Hangzhou form is the clear soup with both shredded chicken and Jinhua ham; lighter household versions drop the ham or use only chicken. A richer relative is the thickened version (chun cai geng), bound with starch into a geng rather than left clear, and the luxury banquet variant folds in crab roe and meat (xie fen chun cai). Water shield is sold fresh in season around West Lake, Xiaoshan's Xianghu, and Lake Tai's Dongshan, and jarred year-round; jarred shield needs only a rinse and a shorter warm-through.
On the Palate
Where West Lake Water Shield Soup sits in the Chinese flavor cloud
Ingredients
Serves 4
How it's made
6 steps · 15 min
- 16 min
If using fresh water shield, pick over and rinse the leaves and shoots gently; if jarred, drain and rinse. Cut the cooked chicken breast and the Jinhua ham into fine shreds about 6 cm long.
- 21 min
Bring a pot of water to a rolling boil, drop in the water shield, and the instant it returns to the boil lift it straight out (well under a minute). Drain well and arrange in the serving bowl.
Watch outThe instant the water returns to a boil, lift the water shield straight out — well under a minute — or the slippery gel slackens and the green dulls.
- 34 min
Bring the clear chicken stock to a simmer in a clean pot and skim any foam so it stays transparent.
Watch outSkim every bit of foam so the stock stays crystal clear — a cloudy broth ruins this dish, which is all about a transparent soup.
- 41 min
Season the stock lightly with salt (and a pinch of white pepper if you like); do not thicken with any starch.
- 51 min
Pour the hot clear stock over the water shield in the bowl.
- 62 min
Lay the chicken and ham shreds over the top and finish with a few drops of rendered chicken fat for sheen and aroma. Serve at once while clear and hot.
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