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 ↓
Cheese, Toasted, or Scotch Rare-bit
Ingredients
Directions
Prepare
Cut the cheese into thin slices.
Make the cheese topping
Melt the cheese in a cheese toaster on a hot plate or over steam.
Once melted, add the mixed mustard and pepper, stirring until completely dissolved.
Fill the bottom of the cheese toaster with hot water.
Brown and serve
Brown the cheese before the fire or with a salamander.
Serve with dry or buttered 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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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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Butter + port winetop 13% of all pairsSmell alikemoderateCooked together1,499 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Cheese + port winetop 15% of all pairsSmell alikemoderateCooked together33 recipes
Shared aroma: sotolon (curry, maple).
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, rich layer that sets and browns on the toast.
- Toast
- Provides a crisp, absorbent base for the melted cheese.
- Mixed mustard
- Adds sharp, tangy flavour that cuts through the richness of the cheese.
The step that matters
Brown the cheese before the fire or with a salamander. Browning relies on high direct heat to caramelise the cheese surface and its milk proteins. If the heat is too gentle, the cheese stays pale and soft, and if it is left too long it can scorch and turn bitter.
Swap the mustard
How well each one fits the dish's main ingredients (cheese, pepper, butter, port wine):
- Capsicumfits better
- Mustardthe original
- Potatofits about as well
- Tomatofits about as well
Fit is the average pairing score against cheese, pepper, butter, port wine. 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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