Mulligatawny is a spiced soup of South Asian origin that became a staple of British and Australian cuisines — the tinned version is one of the most common supermarket soups in Australia. A typical mulligatawny contains a curry-spiced stock (with turmeric, coriander, cumin, and sometimes curry leaves), chicken or lentils, diced apple, and coconut milk or cream. The defining staining challenge is the turmeric: curcumin, the yellow pigment in turmeric, is one of the most persistent food staining agents on carpet — it binds tightly to synthetic fibre dye sites and is highly visible even in small concentrations. A mulligatawny spill has the yellow-orange turmeric colour challenge of a curry combined with a stock soup consistency, the fat content of coconut milk (if used), and the protein challenge of chicken or lentils. The coconut milk versions require more cornflour rounds than a plain stock base. The colour is the dominant concern: treating immediately and using cold water only (turmeric is set by heat) are the two most important actions in the first minutes after the spill.
Mulligatawny soup cleaning steps
- Remove any rice, lentils, chicken pieces, or apple chunks by hand. Vacuum.
- Blot the soup liquid immediately — do not rub. Use cold water only from this point onward: hot or even warm water accelerates turmeric curcumin bonding to carpet fibres.
- Apply cornflour for fat content: one round for stock-based mulligatawny; two rounds for coconut milk versions. 20 minutes per round.
- Apply cold dish soap solution and blot.
- Apply enzyme cleaner for 20 minutes — for chicken or lentil protein and any lentil or apple starch.
- Rinse with cold water and blot dry.
- Apply hydrogen peroxide (3%) for the turmeric colour. Two rounds of 10–15 minutes each, allowing the area to fully dry between rounds. On very light or white carpet with a heavy spill, a third round may be needed. The hydrogen peroxide oxidises the curcumin chromophore and is the most effective home treatment for turmeric staining.
- Do not apply heat (hair dryer, steam) at any stage — heat at any point in the process can permanently set the remaining turmeric colour into the carpet fibre.
Cold water only — heat permanently sets turmeric
Turmeric curcumin undergoes a structural change when exposed to heat that causes it to bond more permanently with synthetic carpet fibres and dye sites. Using warm or hot water to rinse a turmeric stain, or applying heat to dry the carpet after treatment (hair dryer, steam cleaner), can convert a removable stain into a permanent one. Every water application in the mulligatawny treatment sequence must be cold. After the final peroxide round, allow the carpet to air-dry at room temperature — do not accelerate with a heat source. A fan is acceptable; heat is not.
Yellow turmeric colour from mulligatawny persisting in carpet after home treatment?
Turmeric curcumin that has bonded with carpet dye sites may need professional oxidising treatment beyond what home hydrogen peroxide can achieve.
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Frequently asked
The mulligatawny was a tinned version (Campbell's or similar) rather than homemade. Tinned mulligatawny often has a more uniform, brighter yellow colour. Does tinned mulligatawny stain differently from homemade?
Tinned mulligatawny typically uses a standardised spice blend with a consistent turmeric concentration, and often includes modified food starch as a thickener. The turmeric staining challenge is the same — curcumin behaves identically whether from a can or homemade. The modified starch thickener in tinned versions adds to the starch component that the enzyme amylase step addresses. One notable difference with tinned soup: it is often served at a higher temperature (microwaved from room temperature rather than freshly made) — which means the soup may be hotter at the point of spilling, slightly increasing the risk of heat-assisted colour setting before blotting. Act fast and blot with cold water immediately, the same as for homemade.
The mulligatawny had a dollop of yoghurt stirred in at serving (as is traditional), and the yoghurt mixed with the turmeric-stained soup. Does the yoghurt change the treatment?
Yoghurt added to mulligatawny contributes dairy protein (casein) and additional fat (from whole-milk yoghurt). The turmeric colour is the dominant concern and the treatment sequence is unchanged, but if a significant amount of yoghurt was present (more than a spoonful), extend the enzyme cleaner dwell time to 25 minutes to address the casein protein alongside the chicken or lentil protein. The yoghurt fat is typically a minor addition — one cornflour round handles it for plain or low-fat yoghurt in a stock-based mulligatawny; two rounds if the soup was also coconut milk based.
The mulligatawny was a red mulligatawny — some recipes use tomato paste and red chilli as the base rather than yellow curry spice, giving the soup an orange-red colour. Does red mulligatawny stain differently from yellow?
A red or tomato-based mulligatawny has a different colour chemistry from the yellow turmeric version: the colour challenge shifts from curcumin to lycopene (from tomato paste) and capsanthin (from red chilli). These pigments are different from curcumin — they are less heat-sensitive, so the restriction on warm water does not apply. The hydrogen peroxide step is equally effective: one to two rounds for the tomato-chilli colour, the same as for marinara or shakshuka. If the red version also contains turmeric (many recipes include both tomato and turmeric), apply the cold-water rule for the curcumin content. Check the recipe — a soup with visible yellow tones alongside the red contains curcumin and should be treated with cold water only.