Lotus Root and Pork Bone Soup | IDDSI Level 5 Recipe

IDDSI Level 5 (Soft and Bite-Sized) | 20 minutes prep, 90 minutes cooking | Easy

Lotus root and pork bone soup (蓮藕豬骨湯, lin ngau jyu gwat tong) is a quintessential Cantonese autumn and winter nourishing soup — slow-simmered pork bones and fresh lotus root produce a milky-white, naturally sweet broth with a gentle starchy fragrance from the lotus root. Traditional recipes leave the lotus root with some bite, making them unsuitable for IDDSI Level 5 diets. This adaptation slices the lotus root thinly and extends the simmering time until each piece can be effortlessly mashed with the back of a fork, meeting IDDSI Level 5 Soft and Bite-Sized requirements while preserving the full flavour of the original.

Ingredients (3–4 servings)

• 500g fresh lotus root (peeled, sliced into 0.5cm rounds)
• 500g pork bones (龍骨 / spine/back bones; blanched)
• 1800ml water
• 3 slices fresh ginger
• 3–4 dried honey dates / mi zao (optional; add natural sweetness)
• Salt to taste (approximately 1g sodium per serving)
• 50g raw peanuts (optional; soaked 2 hours; omit if allergy risk)

Method

1. Place pork bones in a pot of cold water; bring to the boil and blanch for 3 minutes to remove blood and impurities. Drain and rinse under cold running water.
2. Peel the lotus root and slice into rounds 0.5cm thick. Drain the soaked peanuts if using.
3. Combine 1800ml water, blanched pork bones, ginger slices and honey dates in a large pot. Bring to the boil over high heat; skim off any foam.
4. Add lotus root slices and peanuts (if using). Reduce heat to low; maintain a gentle simmer for 80–90 minutes until the lotus root is completely soft.
5. Test a lotus root slice: a chopstick should pierce it with no resistance, and gentle pressure from the back of a fork should crush it cleanly.
6. Season with salt; skim surface oil. Serve immediately.
7. Before serving, transfer lotus root pieces individually and confirm each slice passes the fork-pressure test. Serve broth separately if required.

Texture Test

IDDSI Level 5 (Soft and Bite-Sized) confirmation: Place a lotus root slice on a flat surface. Apply gentle pressure with the back of a fork (approximately 140g force) — the piece should crush easily without requiring any wrist strength. Crushed particles should be 15mm or smaller. There should be no hard centre or crisp resistance; if resistance is felt, continue simmering 10–15 minutes and re-test.

Broth confirmation: The broth itself is a thin liquid (IDDSI Level 0) suitable for direct drinking. If the individual requires thickened liquids, add an appropriate food thickener to the prescribed IDDSI level before serving.

Safety Notes

⚠️ Lotus root channel variation — The thin walls surrounding the hollow channels may soften faster than the thicker flesh between them. Slicing to 0.5cm and extended simmering eliminates this variation, but each piece must be individually tested before serving.

⚠️ Peanut allergy — Peanuts are a common allergen. If there is any allergy history or uncertainty, omit completely and substitute with soaked pearl barley (薏仁) for body without allergy risk.

⚠️ Bone fragment risk — Inspect the broth carefully for small bone fragments before serving. Pass the broth through a fine-mesh strainer and visually check lotus root pieces for any embedded bone splinters.

⚠️ Sodium management — Elderly individuals with renal or cardiac conditions often have sodium restrictions. Season lightly and consult with a dietitian regarding daily sodium targets.

Sourcing in Hong Kong

• Fresh lotus root: Wet market vegetable stalls; select firm, intact sections with undamaged skin; autumn and early winter (September–December) produces starchy, dense lotus root that softens more evenly during prolonged cooking
• Pork spine/back bones (龍骨): Wet market butchers; spine bones have more cartilage than leg bones, producing a richer, sweeter broth during long simmering; ask the butcher to chop into 5cm pieces
• Dried honey dates (蜜棗): Supermarkets and wet market dried goods stalls; choose plump, dark dates with minimal pit; 3–4 dates per pot is sufficient — excess will make the soup overly sweet

Nutrition

Approximately 180 kcal per serving (200ml broth with 3–4 lotus root slices), 22g carbohydrate, 12g protein. Lotus root is rich in vitamin C, vitamin B6, potassium and polyphenol antioxidants. Long-simmered pork bones release collagen peptides and trace calcium into the broth. The high starch content of lotus root provides readily digestible energy — particularly valuable for elderly residents with poor appetite. The naturally sweet broth often achieves better intake compliance than savoury alternatives in care settings.

Cultural Note

Lotus root and pork bone soup is one of the flagship examples of Cantonese “low and slow” 老火湯 (lou fo tong) soup culture, traditionally simmered for two to three hours in a clay pot, with the quality of both broth and solid ingredients held to high standard. In Hong Kong households, this soup appears on the table across seasons and generations. Offering an IDDSI Level 5-compliant version in residential care settings means that elderly residents with mild dysphagia can share the same soup as their family — a small but meaningful preservation of shared dining culture and personal dignity.