Why it works: Cheese and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 7,962 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Welsh Rarebit
Ingredients
Directions
Melt the butter in a chafing dish until it greases the bottom.
Add the grated cheese and stir continuously with a wooden spoon until melted.
Gradually add the beer, ale, or cream, about 1 tablespoon at a time, until you have used about 1 cup of beer or ale, or ½ cup of cream.
Stir in the mustard and Chili Colorado.
Cook for 5 minutes and serve hot over toast or soda crackers.
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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Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Beer + mustardtop 11% of all pairsSmell alikemoderateCooked together314 recipes
Shared aroma: guaiacol (smoky, sweet).
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Cheese + beertop 11% of all pairsSmell alikemoderateCooked together174 recipes
Shared aroma: 5-ethyl-3-hydroxy-4-methyl-2(5h)-furanone (spice).
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Butter + beertop 15% of all pairsSmell alikemoderateCooked together680 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cheese
- Melts into a rich, smooth sauce that forms the body of the dish.
- Beer or ale
- Thins the melted cheese into a smooth, pourable sauce with a light malty aroma.
- Mustard
- Adds sharp, tangy flavour that balances the richness of the cheese.
- Butter
- Coats the pan and adds fat for a smooth, glossy melt.
The step that matters
Add the liquid gradually while stirring. Cheese proteins can clump and turn grainy or oily if heated too fast or if liquid is added all at once. Adding the beer or cream slowly while stirring keeps the emulsion smooth and the sauce cohesive.
Swap the mustard
How well each one fits the dish's main ingredients (cheese, butter, beer):
- Mustardthe original
- Potatofits about as well
- Tomatofits about as well
- Capsicumfits less well
Fit is the average pairing score against cheese, butter, beer. 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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