Sweet Corn Cream Soup (IDDSI Level 3)

IDDSI Level 3 (Liquidised) | 20 minutes | Easy

Cream of sweet corn soup is a fixture of Hong Kong’s cha chaan teng and Western-style restaurant breakfast menus — warm, gently sweet, and comforting in a way that is immediately familiar to most elderly residents. Tinned versions are widely available but often contain starch thickeners and residual corn fibre that may push texture toward Level 4 or leave particles that compromise Level 3 compliance. This homemade version blends fresh or frozen corn with cream and stock, then strains the result through a fine-mesh sieve to remove all corn skin and fibre, producing a uniformly smooth, pourable liquid that reliably meets IDDSI Level 3 (Liquidised) requirements.

Ingredients (2 servings)

• 300g fresh or frozen corn kernels (approximately 2 cobs of corn, or one standard frozen bag)
• Half a medium onion, finely chopped
• 15g unsalted butter
• 400ml chicken stock or vegetable stock (low-sodium preferred)
• 80ml pouring cream / whipping cream
• 100ml full-fat fresh milk
• Fine salt to taste
• White pepper to taste

Method

1. Melt the butter in a saucepan over low heat. Add the chopped onion and cook gently, stirring, until soft and translucent — approximately 5 minutes. Do not allow the onion to colour.
2. Add the corn kernels; stir for 2 minutes to develop flavour.
3. Pour in the stock. Bring to a boil over high heat, then reduce to low, cover, and simmer for 10 minutes until the corn is completely tender.
4. Remove from heat and allow to cool slightly. Transfer to a blender and blend for 60 seconds until very smooth.
5. Pass the blended soup through a fine-mesh sieve, pressing firmly on the solids with the back of a spoon to extract all liquid. Discard the corn skin and residue in the sieve. This step is essential for achieving Level 3 compliance.
6. Return the strained liquid to the saucepan. Add cream and milk; heat over low heat until just steaming. Do not boil.
7. Season with salt and white pepper. Serve immediately.

Texture Test

IDDSI Level 3 (Liquidised) confirmation: Draw up the soup in a 10ml needleless syringe — flow should reach 8–10ml within 10 seconds. When poured from a spoon, the liquid should flow in a slow, continuous stream without separating, layering or forming lumps. Fork test: the liquid should flow freely through the tines of a fork with no solid residue remaining.

Sieving confirmation: After straining, no corn skin fragments or fibre particles should be visible to the naked eye. If particles remain, pass through the sieve a second time.

Safety Notes

⚠️ Sieving is non-negotiable — corn kernels have a tough outer skin (the pericarp) that resists blending and can remain as small fragments even after thorough blending. These fragments do not meet Level 3 requirements. Always strain through a fine-mesh sieve after blending.

⚠️ Tinned corn soup substitution — commercial tinned corn soup typically contains starch thickeners and may have variable texture between Level 3 and Level 4. Texture should be tested using the syringe method before serving if using tinned soup.

⚠️ Lactose sensitivity — if the resident has lactose intolerance, substitute coconut cream and oat milk for the cream and fresh milk respectively. The texture and sweetness profile is similar.

⚠️ Serving temperature — allow the soup to cool to 40–50°C before serving. Corn soup retains heat well; test with a food thermometer if in doubt.

Sourcing in Hong Kong

• Corn kernels: Frozen corn kernels (无需解冻 — use directly from frozen) are available at all PARKnSHOP and Wellcome stores; fresh corn is sold at wet market vegetable stalls and tends to be sweeter in season (summer months)
• Pouring cream: City’super, PARKnSHOP (selected branches) and Wellcome; use unsweetened whipping cream (30–35% fat)
• Low-sodium stock: Low-sodium chicken or vegetable stock cubes are available at major supermarkets; important for residents with hypertension or cardiac conditions

Nutrition

Approximately 210 kcal per serving, 5g protein, 12g fat, 24g carbohydrate. Sweet corn is a good source of dietary fibre (some soluble fibre remains even after sieving), vitamin B1 (thiamine) and vitamin B5 (pantothenic acid), supporting intestinal health and nerve function. The cream contributes fat-soluble vitamin A and additional calories — useful for elderly residents with poor appetite who need energy-dense foods at breakfast. Protein content can be increased by stirring in one tablespoon of plain yogurt or a small amount of blended silken tofu.

Cultural Note

Cream of corn soup arrived in Hong Kong as part of the Western-style set meal tradition that cha chaan teng adopted and democratised throughout the mid-twentieth century. Unlike its counterpart in European fine dining, the Hong Kong version is unpretentious, sweet, warming and deeply comforting — a morning staple that many elderly residents associate with family breakfasts, school mornings, and the particular comfort of a simple, familiar flavour. By adapting it to IDDSI Level 3, this recipe makes that warmth and familiarity accessible to residents whose swallowing safety requires a smooth, pourable texture — allowing them to share in the morning ritual without compromise.