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Munggo (Filipino Mung Bean Stew) Spilled on Carpet: Removing Bean Starch, Mung Bean Protein, Kangkong Chlorophyll, Alamang Odour, and Pork Fat

18 July 20269 min read

Munggo: The Filipino Friday Mung Bean Stew

Munggo guisado (sautéed mung bean stew — also called monggo, mungo, or munggo) is a beloved Filipino dish traditionally eaten on Fridays. Split or whole mung beans (monggo, Vigna radiata) are simmered until the beans soften and break down, creating a thick, starchy broth. The beans are sautéed with garlic, onion, and tomatoes, seasoned with patis (fish sauce) or alamang (fermented shrimp paste), and finished with kangkong (water spinach) leaves. Pork belly bits (or chicharon for crunch) and tinapa (smoked fish) are common additions.

On carpet, munggo is distinctive because the mung beans break down completely into the broth as they cook, creating a thick, paste-like stew rather than a thin soup. This thick consistency combines with the intense aroma of alamang to create one of the more challenging Filipino food spills — the thick starchy paste requires immediate collection to prevent it setting, and the alamang odour is among the most persistent of any Filipino seasoning on carpet.

Component 1: Mung Bean Starch — Thick Paste Consistency

Mung beans (Vigna radiata) are approximately 60% starch by dry weight — mostly amylopectin with approximately 25–35% amylose. As the mung beans cook, the starch gelatinises and the bean cell walls break down, releasing the starch into the broth and creating a thick, cohesive broth. In a well-cooked munggo, the beans have broken down completely and the broth is almost porridge-like in consistency. This high-starch thick paste behaves similarly to goto (rice congee) on carpet — it begins to set as it cools, adhering to carpet fibres.

The amylase enzyme step is the primary treatment for the mung bean starch. Amylase digests both amylopectin and amylose chains, breaking the gelatinised starch into soluble sugars that are removed with the cold water rinse. The starch is accessible to amylase enzyme even after partial setting, though a longer dwell time is required once the starch has cooled.

Component 2: Alamang (Fermented Shrimp Paste) — Most Persistent Odour

Alamang is the Filipino fermented shrimp paste — tiny shrimp (alamang) fermented with salt. It is similar to Malaysian belacan, Chinese shrimp paste, and Thai kapi. Alamang contains extremely high concentrations of trimethylamine (TMA) from the fermented crustacean protein, plus biogenic amines (putrescine, cadaverine from protein decomposition during fermentation), and volatile sulfur compounds from the fermentation process. Its aroma is intensely pungent and characteristic.

On carpet, even a small quantity of alamang in the munggo creates a powerful and persistent aroma. Three overnight baking soda applications are the standard for munggo made with alamang (versus one or two rounds for patis-seasoned munggo). The alkalinity of baking soda (sodium bicarbonate) converts the volatile TMA from its basic free-amine form into a non-volatile ammonium salt, neutralising the aroma. Each application should cover the entire stain zone and remain overnight.

Alamang odour: three overnight baking soda rounds

Alamang (fermented shrimp paste) contains the highest TMA and biogenic amine concentration of any common Filipino seasoning — more intense than patis. Three overnight baking soda applications are the standard for munggo guisado made with alamang. For patis-seasoned munggo (no alamang), two overnight rounds are sufficient.

Component 3: Kangkong Chlorophyll and Tomato Lycopene

Kangkong (water spinach, Ipomoea aquatica) leaves added to munggo contribute chlorophyll — the same green pigment as in sinigang na hipon and other kangkong-containing Filipino dishes. Tomatoes sautéed at the base of the munggo contribute lycopene (the red carotenoid from tomato) and tomato tannins. Both respond to the hydrogen peroxide step after fat and starch removal.

Step-by-Step Treatment Sequence

  1. Immediately collect mung bean paste, kangkong, tomato, and pork pieces — thick paste; work quickly before starch sets.
  2. Baking soda (15 minutes) — absorbs pork fat or tinapa fat from the paste. Vacuum.
  3. Amylase enzyme (35 minutes, keep moist) — primary step for mung bean starch. Blot and rinse cold.
  4. Dish soap (cold water) — emulsifies remaining pork/tinapa fat. Blot. Rinse cold.
  5. Protease enzyme (20 minutes) — for mung bean globulin protein and pork protein. Blot and rinse cold.
  6. Hydrogen peroxide (3%), round 1 — for kangkong chlorophyll and tomato lycopene. 15 minutes, blot, dry.
  7. Hydrogen peroxide (3%), round 2 — on light carpet for tomato lycopene. Blot and dry.
  8. Baking soda overnight (round 1) — alamang TMA and biogenic amines, patis TMA, tinapa aroma.
  9. Baking soda overnight (round 2) — alamang is highly persistent.
  10. Baking soda overnight (round 3) — standard three rounds for alamang-seasoned munggo.

Munggo with Tinapa vs Munggo with Pork on Carpet

Tinapa (Filipino smoked fish, typically bangus or galunggong) in munggo adds smoked fish TMA and smoke-derived phenolic compounds alongside the alamang. The TMA load is additive — alamang TMA plus tinapa TMA warrants the full three overnight baking soda rounds. Pork-based munggo without tinapa has the pork fat and protein component but lower TMA (only from patis/alamang seasoning). Both versions warrant three overnight rounds if alamang is used; two rounds if seasoned with patis only.

Munggo Guisado Stain on Your Carpet?

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Frequently asked

The munggo was made with the whole mung beans (buong monggo) rather than split mung beans — the whole beans have their green outer seed coat (testa) intact. When the whole beans broke down during cooking, the green outer skins separated from the bean flesh and were floating as small green fragments in the broth. Do the whole mung bean green skins create an additional green colour stain beyond the kangkong chlorophyll?

Whole mung bean green skins (testa) in munggo on carpet — additional green colour consideration: (1) Mung bean testa chlorophyll — the green colour of mung bean seed coat is from chlorophyll a and b, the same chlorophyll present in kangkong leaves, though in a lower concentration per fragment. The small green skin fragments in the spill contribute additional chlorophyll to the stain zone. (2) Mung bean testa flavonoids — the mung bean seed coat also contains flavonoid pigments (vitexin, isovitexin — yellow flavone glycosides) that contribute a mild yellow-green tinge. These are minor compared to the chlorophyll colour. (3) Hydrogen peroxide addresses all — the hydrogen peroxide step addresses chlorophyll from both the mung bean testa and the kangkong leaves as a combined green colour source. Two hydrogen peroxide rounds are standard. (4) Collect skin fragments — the separated green skin fragments in the spill should be collected as part of the initial solid collection step. They are small and may embed in the carpet pile — a lint brush or vacuum pass after solid collection removes remaining fragments. (5) No change to treatment sequence — the whole-bean versus split-bean distinction changes the visual appearance of the spill (more green skin fragments) but not the treatment chemistry. The amylase, protease, peroxide, and baking soda overnight steps are unchanged.

The munggo was made with dried dilis (dried anchovies) rather than patis or alamang for seasoning — some households use dilis boiled in the broth for a salty, umami flavour. Dried dilis (tuyo na dilis) have a very intense fishy, salty, umami aroma. Does dilis-seasoned munggo create a different odour profile on carpet from patis-seasoned or alamang-seasoned versions?

Dilis-seasoned munggo (dried anchovies) versus patis or alamang-seasoned munggo on carpet — odour comparison: (1) Dilis TMA — dried anchovies (dilis) are a high-TMA, high-salt, high-protein dried fish product. The TMA in dilis is comparable to patis in concentration but slightly lower than alamang (which is fermented and thus has higher biogenic amine accumulation). Two overnight baking soda applications are appropriate for dilis-seasoned munggo, the same as for patis-seasoned munggo. (2) Anchovy fat — dried anchovies are a high-fat fish (small pelagic fish like anchovies are 15–25% fat). If dilis pieces are present in the spill, the anchovy fat contributes to the total fat load. One or two baking soda rounds in the absorbent step address the combined mung bean and anchovy fat. (3) Dilis salt — dried anchovies are very high in salt (from the drying and curing process). The salt residue on carpet is hygroscopic — it attracts moisture from the air and can make the carpet feel damp or attract re-soiling after treatment. Thorough rinsing after the dish soap and enzyme steps is important to remove the salt residue. (4) Anchovy pieces in munggo — if the dilis were added whole to the munggo, small anchovy pieces may be present in the spill. Collect these as part of the initial solid collection. (5) Comparison summary: dilis ≈ patis in odour persistence on carpet (two overnight baking soda rounds). Patis < dilis < alamang in increasing odour intensity and treatment rounds required.

The munggo was the ampalaya (bitter melon) version — some Filipino munggo recipes use ampalaya (bitter melon, Momordica charantia) leaves or sliced ampalaya fruit instead of or alongside kangkong. Ampalaya is notable for its intense bitterness (from momordicin compounds). Does ampalaya in munggo create a different stain profile from kangkong-based munggo?

Ampalaya (bitter melon) munggo versus kangkong munggo on carpet: (1) Ampalaya chlorophyll — both ampalaya leaves and ampalaya fruit skin are green from chlorophyll a and b. The chlorophyll stain from ampalaya in munggo is addressed identically to kangkong chlorophyll by the hydrogen peroxide step. Two rounds are standard. (2) Momordicin bitterness compounds — momordicin (the primary bitter compound in ampalaya) is a triterpenoid glycoside. It is a yellow-coloured compound at higher concentrations. On carpet, a significant quantity of ampalaya in the munggo could contribute a faint yellow tinge from momordicin alongside the chlorophyll. The hydrogen peroxide step addresses momordicin colour. (3) Ampalaya fruit stain — if sliced ampalaya fruit (the ridged, pale green fruit) is present in the spill rather than just leaves, the watery flesh of the fruit (approximately 93% water) releases a large volume of slightly bitter, green-tinged juice. This juice is treated identically to the leaf chlorophyll — blot, then hydrogen peroxide. (4) Ampalaya aroma on carpet — cooked ampalaya has a distinctive, slightly earthy aroma from the momordicin and other bitter compounds volatilising on heating. This aroma is not pungent in the same way as alamang or patis — it dissipates naturally and does not require additional baking soda rounds beyond the standard for the seasoning used. (5) No change to alamang or patis treatment — the ampalaya substitution does not affect the TMA odour treatment. The appropriate number of overnight baking soda rounds is determined by the seasoning (alamang = three, patis = two), not the green vegetable choice.

The munggo spilled on a light beige Berber (loop-pile) carpet rather than a cut-pile carpet. Berber carpets have a distinctive flat loop structure that traps food in the loops differently from cut-pile carpet. The thick munggo paste got pushed into the loops before it could be collected. How does munggo stain removal from Berber loop-pile carpet differ from standard cut-pile carpet?

Munggo stain removal from Berber loop-pile carpet versus standard cut-pile carpet: (1) Loops trap solids — Berber carpet's characteristic flat loops create small enclosures between adjacent loops where food particles can become lodged. Mung bean pieces and munggo paste trapped in loops are harder to collect than paste sitting on the tips of cut-pile fibres. Use the edge of a spoon horizontally along the loop direction to scoop paste from between loops, rather than pressing vertically into the pile. Vacuum after collection — the vacuum is more effective at removing particles from loops than from cut-pile. (2) Do not scrub or brush — scrubbing a Berber loop carpet aggressively can catch the loops on a brush and cause snagging or loop distortion (Berber loops can snag and create a run, similar to a run in knit fabric). Apply all enzyme and cleaning solutions by pressing gently with a cloth, not brushing. Blot from directly above, not from an angle. (3) Amylase enzyme into loops — the mung bean starch between the loops requires the enzyme solution to penetrate into the loop gaps. Apply the amylase enzyme generously and use a soft bristle (not stiff) brush gently in the loop direction to work the enzyme between loops without snagging. (4) Rinse thoroughly between loops — Berber carpets can trap rinse water between loops more than cut-pile. Press a dry cloth firmly against the pile after rinsing to extract rinse water from the loop gaps, and use a fan to dry the carpet from above to prevent moisture retention between loops. (5) Alamang odour in Berber loops — the aroma compounds from alamang can concentrate in the loop structure. Three overnight baking soda applications remain standard; ensure the baking soda penetrates into the loops (use a soft brush gently in the loop direction to work the baking soda between loops before leaving overnight).