Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stuffed Crabs
Ingredients
Directions
Prepare the crabs
Cook the crabs in boiling water for 20 minutes and let them cool.
Cut the crabs in half, clean the shells, and set them aside.
Remove the crab meat and chop it finely.
Make the filling
In a saucepan, melt the butter over medium heat.
Stir in the flour.
Gradually add the milk, stirring constantly until the sauce thickens.
Add the chopped onion and cook until softened.
Season the sauce with cayenne pepper, mustard, spices, and nutmeg.
Add the crab meat to the sauce and cook for 10 minutes.
Stir in the crumbs and thicken the mixture with the beaten egg yolk mixed with water.
Season with salt and pepper to taste.
Stuff and serve
Stuff the crab shells with the mixture and serve.
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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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + nutmegtop 7% of all pairsSmell alikestrongCooked together13,015 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mustard + nutmegtop 8% of all pairsSmell alikestrongCooked together1,019 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Crab meat
- Provides the main body and sweet, delicate flavour of the filling.
- Butter and flour
- Form a roux that thickens the milk into a smooth, binding sauce.
- Milk
- Forms the liquid base of the sauce, giving it creaminess and body.
- Egg yolk
- Enriches and further thickens the filling when gently mixed in.
- Crumbs
- Absorb liquid and help the filling hold its shape in the shells.
The step that matters
Thickening the egg yolk. Egg yolk can scramble if it meets hot sauce directly. Mixing it with water and stirring it in gently off a strong heat helps it thicken the filling smoothly.
Swap the onion
How well each one fits the dish's main ingredients (crab, butter, flour, milk, pepper, mustard, nutmeg):
- Shallotfits better
- Chivefits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against crab, butter, flour, milk, pepper, mustard, nutmeg. 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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