Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Methodist Welsh Rarebit
Ingredients
Directions
Make the sauce
Melt the butter in a chafing dish.
Stir in the cornstarch and add the milk or cream; cook for 2 minutes.
Add the cheese and stir until melted.
Season with salt, mustard, and cayenne pepper.
Serve
Serve over soft toast.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + cheesetop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Cheese + mustardtop 11% of all pairsSmell alikemoderateCooked together1,805 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
- Cheese
- Melts into the sauce to give it its rich flavour and creamy body.
- Cornstarch
- Thickens the milk or cream so the sauce coats the toast instead of running off.
- Milk or thin cream
- Forms the liquid base that the cheese melts into and the cornstarch thickens.
- Butter
- Adds fat and richness, and gives the sauce a smooth, mellow base.
The step that matters
Cooking the cornstarch in the milk or cream. Cornstarch only thickens fully when the liquid is heated enough for its starch granules to swell and gelatinize. Stirring while it cooks prevents lumps, and the sauce should be thick before the cheese goes in.
Swap the mustard
How well each one fits the dish's main ingredients (butter, milk, cheese, pepper):
- Potatofits better
- Capsicumfits better
- Tomatofits better
- Mustardthe original
Fit is the average pairing score against butter, milk, cheese, 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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