Winter Tonic Soup (Strained) | IDDSI Level 3 Recipe
IDDSI Level 3 (Liquidised) | 120 minutes | Moderate
Winter tonic soup (冬令進補湯, dung ling jeun bou tong) is a category of warming, nourishing soups consumed throughout the winter months in Hong Kong and broader Cantonese culture, with roots in the traditional Chinese medicine principle of 冬令進補 — winter is the optimal season for deep nourishment and replenishment of the body’s vital resources. Winter tonic soups are characterised by warming herbs and ingredients: lamb (羊肉) is the most traditional winter meat in Cantonese tonic cooking, often combined with warming herbs such as dried tangerine peel (陳皮), ginger, angelica root (當歸), and Sichuan pepper (花椒, used sparingly). The slow-simmered broth produces a deeply savoury, warming, intensely aromatic liquid quite unlike the gentle, neutral soups of other seasons. For individuals on IDDSI Level 3 Liquidised diets, lamb pieces, herb root segments, tangerine peel fragments, and peppercorns are all swallowing hazards. This recipe simmers the full traditional tonic formula and strains completely, preserving the warming herbal-savoury character in a safe, particle-free flowing broth.
Ingredients (3–4 servings)
- 400g bone-in lamb shoulder or neck pieces (羊肉; blanched)
- 15g dried tangerine peel / chen pi (陳皮; rinse; soak 10 minutes to soften slightly)
- 10g Dang Gui / angelica root (當歸; rinse; see safety note)
- 6 dried red dates / jujubes (stoned)
- 10g dried Astragalus root slices (北芪; rinse)
- 4 thin slices fresh ginger
- 1 tsp Sichuan peppercorns (花椒; optional — adds warming tingle; will be strained out)
- 1.2 litres water
- 1/2 tsp fine sea salt (adjust after straining)
- 1 tsp Shaoxing rice wine (optional)
Method
- Blanch lamb pieces in boiling water for 4–5 minutes, drain, and rinse thoroughly. Lamb produces more foam than pork; blanch carefully and rinse well.
- Rinse and soak tangerine peel for 10 minutes; soak astragalus and Dang Gui briefly. The tangerine peel carries the characteristic winter tonic fragrance.
- Combine blanched lamb, all herbs, ginger, Sichuan peppercorns (if using), stoned red dates, and cold water in a large clay pot or heavy saucepan. Bring to the boil over high heat, skimming foam vigorously.
- Add Shaoxing wine if using. Reduce to a very gentle simmer. Cover and cook over low heat for 90–110 minutes. The broth will deepen in colour and develop a rich, warming, slightly resinous aroma from the tangerine peel.
- Remove from heat. Season with salt. Rest 5 minutes.
- Pour all contents through a fine-mesh sieve. Discard all solids — lamb pieces, all herb segments and peel, peppercorns, red date remnants, ginger. A double strain through muslin is recommended due to the aromatic herbs.
- The finished broth should be a rich, dark, amber to brown colour with an intensely warming, resinous, herbal-savoury aroma.
- Confirm free-flowing texture and no particles. Serve warm at 55–60°C.
Texture Test
IDDSI Level 3 (Liquidised) confirmation: Tilt a loaded spoon — the broth should flow slowly and continuously, leaving a thin film on the back of the spoon. Using the IDDSI syringe test at 45 degrees, 1–10ml should be expelled in 10 seconds. The broth must be completely free of herb fibres, lamb fat globules (skim if excessive), peppercorn fragments, and any particulate matter.
Safety Notes
⚠️ Lamb fat — lamb produces more surface fat than pork or chicken. After straining, allow the broth to sit for 5 minutes and skim the fat layer from the surface before serving, or refrigerate and remove the solidified fat cap. Excessive fat in a liquid can cause issues with aspiration.
⚠️ Dang Gui caution — same contraindication as in silkie chicken herbal soup: avoid for individuals on warfarin or antiplatelet medications. Can be omitted.
⚠️ Sichuan pepper — Sichuan peppercorns create a distinctive numbing-tingling sensation (麻). While this is a feature of the warming tonic, be aware that some individuals may find the tingle surprising or uncomfortable. For first-time serving to elderly individuals, halve the quantity or omit.
⚠️ Serving temperature — confirm below 60°C before serving. This broth retains heat well in a clay pot.
Sourcing Outside Hong Kong
For international care kitchens and home cooks outside Hong Kong, Cantonese ingredients are widely available at East and Southeast Asian grocery stores:
- United Kingdom: Wing Yip (Birmingham, London, Manchester), See Woo (London), Loon Fung (London)
- United States: 99 Ranch Market (West Coast), H Mart (East Coast), local Chinatown grocers
- Canada: T&T Supermarket (national chain), local Asian markets
- Australia: Burlington Supermarket, Tang’s, local Chinese grocers in Chinatown precincts
- Singapore & Malaysia: Sheng Siong, NTUC FairPrice (Singapore); Tesco, Mydin (Malaysia)
- Online: Sous Chef (UK/EU), Amazon.com (US), Yami.com (US)
Lamb (leg, shoulder, or minced): widely available at mainstream supermarkets and halal butchers.
If a specific ingredient is unavailable in your region, the recipe notes alternative substitutions in the Ingredients section. For dishes requiring fresh Cantonese-specific ingredients (e.g. preserved century egg, fresh rice noodle rolls), check with your local East Asian grocer before substituting — texture compliance for IDDSI levels may require specific products.
Nutrition
Approximately 60–80 kcal per 200ml serving (strained broth). Lamb broth is richer in iron and zinc than chicken or pork broth, with dissolved carnitine (associated with energy metabolism) and B vitamins. For elderly individuals experiencing cold sensitivity, fatigue, or anaemia in winter, this warming tonic broth is particularly well-suited. The warming herb formula — tangerine peel, angelica, astragalus — has a long traditional history of use for winter immunity and circulation support.
Cultural Note
冬令進補 is a fundamental principle of Cantonese seasonal health practice. In traditional Cantonese medicine philosophy, winter is the season of kidney energy (腎氣) — the time to replenish what the body’s active months have expended, to prepare for another year. Warming foods drive out cold, support circulation, and fortify the body’s defences against winter illness. For elderly Hong Kongers, the shift to winter tonic soups is as natural and expected as putting on warmer clothes — it is a seasonal self-care ritual rooted in a lifetime of practice. Serving a Level 3 winter tonic broth in a care home or hospital setting honours this tradition, offering warming, seasonally appropriate nourishment that connects residents to their own health wisdom.
Storage and Reheating
- Refrigerate in a covered container for up to 3 days. The broth will gel due to collagen content — normal; reheat gently to reliquefy.
- Freeze in portions for up to 2 months.
- Reheat on stovetop to 55–60°C, stirring gently. The distinctive herbal aroma is best preserved with gentle reheating rather than boiling.