Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Welsh Rarebit
Ingredients
Directions
Make the cheese sauce
Combine cheese, cream, butter, and mustard in a pan.
Heat the mixture until melted.
Add the egg and serve
Beat the yolk and white of the egg in a separate bowl.
Add salt and cayenne pepper to the egg mixture.
Stir the egg mixture into the cheese mixture just before removing it from the heat.
Pour the melted cheese over toast 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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cheese + mustardtop 11% of all pairsSmell alikemoderateCooked together1,805 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cheese + creamtop 15% of all pairsSmell alikemoderateCooked together2,655 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cheese
- Melts into a smooth sauce that gives the rarebit its rich flavor and body.
- Egg
- Yolk and white thicken the sauce gently when stirred in, giving it a creamier set.
- Cream
- Adds moisture and richness, helping the cheese melt into a smooth, pourable sauce.
- Mustard
- Adds sharp, tangy flavor that balances the richness of the cheese.
The step that matters
Stir the egg mixture in just before removing from the heat. Egg proteins set when heated, so if the pan is too hot or the egg sits too long, it can scramble and turn the sauce grainy. Adding it near the end and off the heat keeps the sauce smooth.
Swap the mustard
How well each one fits the dish's main ingredients (cheese, cream, butter, egg, pepper):
- Potatofits better
- Capsicumfits about as well
- Asparagusfits about as well
- Mustardthe original
Fit is the average pairing score against cheese, cream, butter, egg, 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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