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Level 4 Puréed
Prep: 30 min Difficulty: Easy Main ingredient: fish
#level-4#fish#ginger#scallion#soup#cantonese#hong-kong#blended#high-protein#omega-3#elderly

Ginger and Fish Fillet Soup (Blended) | IDDSI Level 4 Recipe

IDDSI Level 4 (Pureed / Extremely Thick) | 30 minutes | Easy

Ginger and fish fillet soup (薑蔥魚片湯, geung chung yu pin tong) is a light, fragrant Cantonese soup typically served as part of a home meal alongside rice and vegetables. Thin-sliced white fish fillets — grouper (石斑魚), grass carp (草魚), or tilapia — are briefly poached in a ginger-scallion broth until just cooked, producing tender, flaky, mildly flavoured fish in a clean, aromatic soup. Ginger and scallion are the essential aromatics: the ginger neutralises any fishiness, while the scallion provides fresh green fragrance. This soup is one of the quickest ways to deliver high-quality protein, omega-3 fatty acids, and gentle calories to an elderly individual. For individuals on IDDSI Level 4 Pureed diets, raw or loosely flaked fish fillets are a swallowing and choking hazard (fish at this texture is typically IDDSI Level 5–6). This recipe blends the cooked fish fillet with the broth to produce a smooth, uniformly thick puree that passes the IDDSI Level 4 fork-drip test and holds its shape briefly when placed on a spoon.

Ingredients (2 servings)

Method

  1. Prepare fish: remove any remaining skin, pin-bones (run a finger along the fillet to feel for bones; remove with tweezers or fingertips), and cut into 3–4cm pieces for even poaching.
  2. In a saucepan, bring stock to a gentle simmer with ginger slices and white parts of scallion. Simmer 5 minutes to infuse aromatics.
  3. Add fish pieces to the simmering broth. Cook over low heat for 4–5 minutes until fish is opaque throughout and flakes easily when pressed. Do not boil vigorously — fish cooks quickly and gentle heat produces a more tender texture for blending.
  4. Remove ginger slices. Add soy sauce if using, salt, and white pepper.
  5. Transfer the cooked fish and all broth to a blender. Blend on high speed for 60–90 seconds until completely smooth and homogeneous. The blended soup should have a creamy, uniform consistency.
  6. Return to saucepan. If the blended soup is too thin for Level 4, stir in the cornstarch solution over medium heat and stir continuously for 1–2 minutes until thickened to a thick, flowing consistency.
  7. Add sesame oil. Taste and adjust seasoning.
  8. Perform IDDSI Level 4 test before serving (see below).
  9. Serve at 55–60°C.

Texture Test

IDDSI Level 4 (Pureed / Extremely Thick) confirmation: Place a teaspoon of the blended soup on a flat surface — it should hold a soft mound shape briefly before very slowly spreading. The fork drip test: tilt a fork over the soup — it should fall off in slow, thick drops rather than flowing continuously (Level 3) or not falling at all (Level 6). The soup must be completely smooth with no fish flake, bone fragment, or skin piece detectable.

Bone safety check: Before blending, visually confirm all pin-bones and skin have been removed. After blending, pass a small amount through a fine-mesh sieve to confirm no hard particles remain.

Safety Notes

⚠️ Bone removal is the critical safety step — fish pin-bones are among the most dangerous food hazards for dysphagia patients; they are thin, sharp, and not softened by cooking. Remove ALL visible and tactile pin-bones before poaching. After blending, sieve a portion to confirm no hard fragments.

⚠️ Skin removal — fish skin, even when cooked, can form a cohesive slippery film. Remove completely before cooking.

⚠️ Blending homogeneity — blend for at least 60 seconds on high speed. Insufficient blending leaves fish flake fragments that do not meet Level 4 requirements.

⚠️ Serving temperature — confirm below 60°C. Blended fish soup cools quickly; serve promptly.

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:

Fresh white fish fillets (tilapia, sea bass, cod): available at most East Asian fishmongers; frozen fillets at H Mart, T&T, and Wing Yip.

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 120–150 kcal per 200ml blended serving. Excellent source of complete protein (approximately 12–15g per serving), omega-3 fatty acids (EPA and DHA) from the fish — particularly beneficial for cardiovascular health, cognitive function, and inflammation in elderly individuals. The blended format makes this one of the most nutritionally dense IDDSI Level 4 soups available, combining high protein, healthy fats, and easily absorbed micronutrients in a single serving.

Cultural Note

薑蔥魚片湯 represents Cantonese cuisine at its most elemental: fresh fish, clean broth, fragrant ginger and scallion. This soup is served at family dinner tables throughout Hong Kong, often prepared for the elderly or unwell as the most easily digestible main protein of the meal. The adaptation to IDDSI Level 4 requires blending — a texture change that is significant — but the flavour profile is preserved almost completely. Caregivers serving this to elderly individuals familiar with the original should note that the blended presentation may be unfamiliar; briefly explaining that the flavours are the same, just prepared differently, can ease acceptance.

Storage and Reheating

⚠️ This recipe is for reference only. Texture varies by technique and ingredients. A speech therapist should confirm the appropriate IDDSI level.
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