What Makes Pad See Ew a Dark, Multi-Component Stain
Pad see ew (also spelled pad siew or phat si-io) is a popular Thai stir-fry made with wide sen yai rice noodles, dark soy sauce, a small amount of light soy sauce, egg, Chinese broccoli (gai lan), and meat or tofu, all cooked rapidly in a very hot wok with oil. The characteristic dark colour of pad see ew comes from dark soy sauce — a thicker, less salty, more concentrated soy sauce with a higher melanoidin content than regular soy. The dish is finished with a degree of wok char (the slightly caramelised, smoky quality from the hot wok), which adds additional dark caramelisation compounds to the sauce. A spilled plate of pad see ew deposits multiple staining agents simultaneously: the dark soy melanoidin pigment spreads rapidly in the cooking oil carrier; egg protein sets under any heat; wide rice noodles break apart and deposit starch in carpet pile; and Chinese broccoli leaves chlorophyll.
What You Need
- Dish soap — degreasing formula
- Enzyme cleaner with protease and amylase
- Hydrogen peroxide 3%
- Baking soda (optional)
- Cold water — essential for egg protein
- Blotting cloths
- Spoon or fork for noodle removal
Cold Water Only — Egg Protein Sets Instantly Under Heat
Pad see ew contains egg that has been lightly scrambled in the wok. Any hot water or heat applied during cleaning permanently bonds this egg protein to carpet fibres. Use cold water exclusively throughout the entire cleaning process.
Step 1 — Remove Noodles and Solid Pieces
Remove the noodles from the carpet using a fork or spoon. Wide sen yai noodles are slippery from the cooking oil but can be lifted away from the carpet surface before they cool and begin to stick. Remove Chinese broccoli stems and any meat or tofu pieces. Do not rub or press down — the dark soy sauce coating the noodles transfers readily to carpet fibres. Blot with a dry cloth to absorb surface liquid.
Step 2 — Cold Water Dilution for Soy Melanoidin
Dark soy melanoidin is water-soluble. Apply cold water to the stain and blot immediately — the water dilutes the concentrated soy pigment and removes a significant portion before it bonds to carpet fibres. Blot, apply, blot again for two to three rounds of cold water. This step is more important for pad see ew than for oil-based stains, where water would drive the stain deeper.
Step 3 — Dish Soap for Cooking Oil and Soy Pigment
Mix one teaspoon of dish soap in 250 ml of cold water. Apply and blot from edge to centre. The dish soap emulsifies the wok cooking oil and helps lift the dark soy melanoidin that remains bonded to carpet fibres after the cold water dilution. The stain will lighten substantially during this step. Rinse with cold water and blot dry. Repeat if the cloth continues to pick up dark brown colour.
Step 4 — Enzyme Cleaner for Egg, Meat Protein, and Noodle Starch
Apply enzyme cleaner with protease and amylase. Protease addresses the egg protein and any meat protein (chicken, pork, or beef is common in pad see ew). Amylase breaks down the rice starch from the noodles — wide rice noodles contain significant starch that deposits on carpet and dries stiff. Allow 18 to 20 minutes dwell time, keeping the area damp. Blot and rinse with cold water.
Step 5 — Hydrogen Peroxide for Residual Dark Colour
Apply 3% hydrogen peroxide to the remaining brown mark. Allow 8 to 10 minutes. Dark soy melanoidin responds moderately well to hydrogen peroxide — better than kecap manis melanoidin (which also has palm sugar caramel) but requiring a similar 10-minute dwell. Blot and rinse. One to two rounds is usually sufficient. Allow the carpet to dry completely between rounds.
Deep Brown Mark After Two Peroxide Rounds?
Dark soy melanoidin from pad see ew that has had time to bond deeply may require professional oxidising treatment. Local carpet cleaners in the Sutherland Shire have access to commercial-grade solutions for dark soy-based stains.
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Frequently asked
Is pad see ew harder to remove from carpet than pad thai?
Pad see ew is generally more difficult to remove than pad thai because of the dark soy sauce base. Pad thai uses regular fish sauce and tamarind for its seasoning — neither creates the concentrated dark soy melanoidin stain that pad see ew produces. Pad thai does contain palm sugar caramel, which adds a brown element similar to what kecap manis contributes, but the colour is lighter and less concentrated than dark soy. Pad thai also includes more peanut oil and dry peanut residue, which requires more attention to the cornflour step. In summary: pad see ew is harder for colour; pad thai is harder for fat.
The pad see ew was a very large serving and it spilled onto light-coloured carpet. The stain looks almost black. Is this recoverable?
A large pad see ew spill on light carpet looks extreme but is largely recoverable with methodical treatment. The apparent near-black colour is the concentrated dark soy melanoidin in cooking oil — the oil keeps the pigment liquid and vivid-looking. The cold water dilution step removes a substantial portion of this before it bonds. Even on light carpet, two rounds of dish soap followed by hydrogen peroxide will typically lighten the stain to a pale brown or beige that is much less visible. For very large spills, plan for: three rounds of cold water dilution, two rounds of dish soap, 25-minute enzyme dwell, and two to three rounds of hydrogen peroxide over multiple sessions. Professional treatment is available if residual colour remains.
There was wok-hei char on the noodles and a faintly smoky smell in the carpet after cleaning. Is this from the dark soy or from the charring?
The smoky smell is from wok-hei: the slightly caramelised, char-flavoured compounds that form on the noodle surface during high-heat wok cooking. These compounds include pyrazines and other volatile aromatics from the Maillard reaction between the noodle sugars and amino acids at very high temperature. They are not a staining concern but produce a pleasant-when-eating, less-pleasant-in-carpet smell. Baking soda applied overnight addresses the wok-hei aromatics in carpet pile. The dark colour is from the dark soy melanoidin, not from the char.
The tofu pad see ew I spilled had silken tofu that dissolved into the sauce. Does dissolved silken tofu add a significant staining agent?
Silken tofu in pad see ew contributes soy protein and a small amount of soy fat, but at the concentration found in a single serving, the tofu component is minor compared to the dark soy sauce pigment load. The protease in the enzyme cleaner step addresses the dissolved tofu protein at the same time as the egg protein. Tofu does not contribute colour — it is white before and after cooking — so there is no additional pigment concern from the tofu. The main difference with tofu pad see ew is that there is no meat fat, which slightly reduces the overall oil content and makes the dish soap step less critical than for a meat version.