Why it works: Bread and butter 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 ↓
Toasted Cheese or Welsh Rabbit
Ingredients
Directions
The book says “a slow oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the toast
Cut the bread into ½ inch thick slices and remove the crust.
Toast the bread slightly and spread with butter.
Make the cheese topping
Melt the cheese in a bowl or over steam.
Add a small quantity of mixed mustard and season with pepper.
Bake and serve
Spread the melted cheese over the toast.
Place in a 400°F (200°C) oven for 2 minutes.
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.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Bread + cheesetop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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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).
-
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
- Bread
- Provides the sturdy base that holds the melted cheese topping.
- Butter
- Adds richness and helps the toast brown lightly while keeping it moist.
- Good rich cheese
- Melts into a creamy, savoury topping that gives the dish its main flavour.
- Mixed mustard
- Adds sharpness that balances the richness of the cheese.
The step that matters
Melting the cheese gently. Cheese melts smoothly at low, even heat. Strong heat can make it oily or grainy and cause it to separate, so melt it in a bowl or over steam rather than in a hot pan.
Swap the mustard
How well each one fits the dish's main ingredients (bread, butter, cheese, pepper):
- Capsicumfits better
- Tomatofits better
- Potatofits about as well
- Mustardthe original
Fit is the average pairing score against bread, butter, 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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