Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Welsh Rarebit
Ingredients
Directions
Make the cheese sauce
Melt the butter in a stew pan.
Add the cheese, mustard, and Cayenne pepper, stirring until the cheese melts.
Gradually add the cream while stirring until the mixture is smooth and creamy.
Serve
Serve the cheese mixture on buttered toast cut into ½ inch strips placed closely together.
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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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Cheese + breadtop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + cheesetop 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Soft cheese
- Melts into the sauce and provides the main body, richness and flavor.
- Thin cream
- Loosens the melted cheese into a smooth, spreadable sauce.
- Butter
- Adds fat and richness to the sauce and coats the pan for melting.
- Mustard
- Adds a sharp, tangy flavor that balances the richness of the cheese.
The step that matters
Gradually add the cream while stirring. Adding cream slowly while stirring lets the cheese emulsify into a smooth sauce. Adding it all at once or over high heat can cause the cheese to seize, curdle, or become grainy.
Swap the mustard
How well each one fits the dish's main ingredients (butter, cheese, pepper, cream, bread):
- Potatofits better
- Capsicumfits about as well
- Onionfits about as well
- Mustardthe original
Fit is the average pairing score against butter, cheese, pepper, cream, bread. 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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