Why it works: Butter and bread 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 ↓
Welsh Rarebit
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the toast
Make 4 slices of toast and butter them well on both sides.
Cut off the crusts and place the toast on a baking tin.
Top and bake
Preheat the oven to 400°F (200°C).
Cut 4 thick slices of cheese, remove the rinds, and place one slice on each piece of toast.
Sprinkle a little cayenne and salt over the cheese.
Bake in the oven until the cheese is melted.
If not browned, use a salamander to finish.
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 + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Cheese + breadtop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Bread + peppertop 16% of all pairsSmell alikemoderateCooked together20,964 recipes
Shared aroma: 2-nonenal (fatty, green).
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Cheese + peppertop 18% of all pairsSmell alikemoderateCooked together7,861 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
- Rich cheese
- Melts into a creamy, savoury topping that forms the body of the dish.
- Butter
- Adds richness and helps the toast brown and resist soaking up the topping.
- Bread
- Provides a sturdy base that holds the melted cheese.
The step that matters
Bake until the cheese is melted. Heat must melt the cheese fully without overcooking it, since too much heat makes it oily and rubbery. Checking it as it melts keeps the topping smooth.
“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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