What Igado Contains and Why It Has the Highest Haem Load
Igado is an Ilocano Filipino sautéed dish made with strips of pork loin, pork liver, pork heart, and pork kidney, cooked with vinegar, soy sauce, bell pepper, and peppercorns. It is one of the few mainstream Filipino dishes that combines three distinct organ types — liver, heart, and kidney — in the same preparation. Each organ contributes a different haem protein to the stain: liver contains haem enzymes (cytochrome P450 and other haemoproteins) at very high concentration; heart contains myoglobin from cardiac muscle tissue; and kidney contains haemoglobin from blood, myoglobin from the muscular wall, and residual urea compounds from kidney function. The combined haem load from these three sources is higher than any single-organ Filipino dish.
Why Cold Water Is Non-Negotiable for Igado
All three haem proteins — cytochrome, myoglobin, and haemoglobin — share the same critical vulnerability: hot water denatures the globin protein component and causes the haem iron to bond directly to carpet fibres, producing a permanent rust-brown discolouration. This applies regardless of which organ the haem came from. Because igado concentrates three sources of haem protein in the same dish, the risk of permanent haem-set staining is proportionally higher than with a single-organ dish like liver alone. Cold water must be used throughout the entire treatment — from the first blot to the final rinse.
The Vinegar Component
Igado is cooked with vinegar (typically cane vinegar or sukang maasim), which partially denatures the organ proteins during cooking. This means the haem proteins in igado are already somewhat heat- and acid-denatured when the dish is served — they are less coiled and more accessible to enzyme action than proteins in a raw organ spill. The acid from the vinegar in the spill also has a short-lived mild bleaching effect on some carpet dyes if not rinsed promptly, so cold water blotting should begin as soon as possible.
Cold Water Only — Three Organ Haem Sources Present
Igado contains liver, heart, and kidney haem proteins. Hot water will permanently set all three into carpet fibres. Use cold water from the first blot to the final rinse.
The Correct Treatment Sequence
- Lift all solid organ and pork strips with a spoon immediately. The smaller, thinner cuts in igado can embed in carpet pile — remove all solid matter before applying any liquid.
- Blot the sauce with a clean cloth using firm cold-water-dampened pressure to dilute and remove the surface haem from all three organ types. Work from the outer edge inward.
- Apply a baking-soda layer to absorb pork fat and soy sauce. Leave fifteen minutes and vacuum.
- Mix one tablespoon of clear dish soap with two cups of cold water. Apply and work gently to emulsify the pork fat and bell pepper capsanthin. Allow five minutes. Rinse with cold water and blot.
- Apply a generous application of protease enzyme cleaner — use a larger quantity than for a single-organ dish, given the elevated total haem protein load from three organ sources. Leave eight to ten minutes and blot.
- Apply a second protease pass if the stain remains noticeably dark. The vinegar pre-denaturation means the proteins are more accessible, so a second enzyme pass is more effective here than with raw organ spills.
- Apply 3 % hydrogen peroxide to any residual rust-brown or grey-brown discolouration from oxidised haem. Leave four minutes. Rinse thoroughly with cold water and blot dry.
- Apply baking soda and leave sixty minutes to extract residual pork fat. Vacuum.
When Professional Extraction Is Needed
Igado that was treated with warm or hot water before the haem proteins could be cold-rinsed — permanently setting all three organ haem types into the fibres — requires professional treatment with commercial oxidising agents and enzyme pre-treatment. The rust-brown haem-set staining from multiple organ sources simultaneously is among the most difficult carpet stain outcomes to reverse without professional equipment.
Need a Carpet Cleaning Specialist in Sutherland Shire?
Igado's triple organ combination — liver, heart, and kidney — gives it a higher haem load than any single-organ Filipino dish, making cold water treatment and thorough protease enzyme application especially important. Sutherland Shire Cleaners matches enquiries with independent local carpet cleaning specialists across the Sutherland Shire area.
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Frequently asked
How is igado different from a simple pork liver spill on carpet?
Pork liver alone contributes cytochrome and haemoprotein haem compounds. Igado also adds myoglobin from the heart and haemoglobin plus urea compounds from the kidney. The total haem protein concentration in the stain is higher than any single-organ source, requiring a more generous enzyme application and longer contact time.
Does the vinegar in igado help or hurt during cleaning?
The vinegar pre-denatures the organ proteins during cooking, making them slightly more accessible to enzyme action — so protease cleaner works a little more efficiently on igado than on raw organ spills. However, the vinegar acid in the spill itself can mildly bleach some carpet dyes on prolonged contact, so cold water rinsing should begin promptly.
Why does igado leave a rust-brown rather than red stain as it dries?
Fresh haem iron in myoglobin and haemoglobin is in the ferrous (Fe2+) form, producing a bright red colour. On exposure to air, the iron oxidises to the ferric (Fe3+) form — the same chemistry responsible for rust — which is brown or grey-brown. This oxidised haem is what requires the hydrogen peroxide step to address.