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 ↓
Toasted Cheese
Ingredients
Directions
Make the cheese sauce
Cut the cheese into small pieces.
In a saucepan, combine cheese, butter, ale, salt, pepper, and mustard.
Place the pan over medium heat and stir until melted and smooth.
Serve
Pour the mixture over the hot buttered toast and serve immediately.
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.
Photo for illustrative purposes only · Contact us to use it
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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Pepper + mustardtop 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 + peppertop 18% of all pairsSmell alikemoderateCooked together7,861 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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, providing the main body, richness and savory flavor of the topping.
- Butter
- Adds fat that helps the cheese melt smoothly and gives a rich mouthfeel.
- Ale
- Its liquid helps the cheese melt into a smoother, looser sauce rather than clumping.
- Mixed mustard
- Adds sharp, tangy flavor that balances the richness of the melted cheese.
The step that matters
Stirring the cheese over medium heat until smooth. Cheese heated too fast or too hot can turn grainy or oily as its proteins tighten and fat separates. Gentle, steady heat with constant stirring lets it melt into an even, smooth sauce.
Swap the mustard
How well each one fits the dish's main ingredients (cheese, butter, pepper):
- Capsicumfits better
- Potatofits about as well
- Mustardthe original
- Tomatofits about as well
Fit is the average pairing score against cheese, butter, 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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