Why it works: Sauce and ketchup match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Crab Gumbo
Ingredients
Directions
Prepare
Prepare the crabs by cleaning them.
Make the gumbo
In a pot, brown the chopped onions in butter.
Add the flour and stir until combined.
Mix in the tomatoes and boiling water, then add the crabs.
Simmer for 30 minutes, stirring occasionally.
Add the Lea & Perrin's sauce, tomato ketchup, salt, and pepper.
Fry the okra and ham separately, then add to the pot.
Serve
Serve with sliced lemon.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Sauce + ketchuptop 1% of all pairsSmell alikestrongCooked together1,099 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Crab + buttertop 10% of all pairsSmell alikemoderateCooked together812 recipes
Shared aroma: nonanal (fat, citrus).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Crabs
- Provide the main protein and sweet seafood flavor that defines the dish.
- Onions
- Build a sweet, savory base of flavor when browned in butter.
- Flour
- Thickens the broth into a body-rich gumbo texture.
- Tomatoes
- Add acidity, moisture, and color to the gumbo base.
- Okra
- Releases a natural thickening effect that gives gumbo its characteristic texture.
The step that matters
Adding the flour to the browned onions. Flour must be stirred in evenly so it cooks into the fat and avoids lumps; cooking it briefly removes raw starch taste and lets it thicken the liquid smoothly when the boiling water and tomatoes are added.
Swap the tomato
How well each one fits the dish's main ingredients (crab, onion, butter, flour, sauce, ketchup, pepper):
- Capsicumfits better
- Horseradishfits better
- Mustardfits better
- Tomatothe original
Fit is the average pairing score against crab, onion, butter, flour, sauce, ketchup, pepper. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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