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Welsh Rarebit

A toasted bread topped with a creamy cheese and mustard mixture, browned under a broiler.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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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 ↓

Welsh Rarebit

Ingredients

Directions

Prepare the toast

  1. Toast the bread on both sides and butter it well.

  2. Cut the toast into squares and place them on a hot dish.

Make the cheese sauce

  1. In a saucepan, combine the cheese, cream, mustard, and cayenne pepper.

  2. Stir over low heat until the mixture is smooth and creamy.

Brown and serve

  1. Pour the cheese mixture over the toast and brown it quickly under a broiler or salamander.

  2. Serve immediately.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Bread + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  2. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  3. Cheddar cheese + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together2,436 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  4. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Cheddar cheese + mustardtop 11% of all pairs
    Smell alikemoderate
    Cooked together708 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

Cheddar cheese
Melts into a creamy sauce and provides the rich, savory flavor of the dish.
Thick cream
Adds moisture and smoothness so the cheese melts into a spreadable sauce.
Mixed english mustard
Adds sharp, tangy flavor that balances the richness of the cheese.
White bread
Forms the crisp, buttered base that holds the cheese topping.

The step that matters

Stirring the cheese mixture over low heat. Cheese proteins toughen and the sauce can grainy or separate if it gets too hot, so gentle heat and constant stirring keep it smooth and creamy.

Swap the mustard

How well each one fits the dish's main ingredients (bread, cheddar cheese, cream, pepper, butter):

  1. Potatofits better
  2. Capsicumfits better
  3. Onionfits better
  4. Mustardthe original

Fit is the average pairing score against bread, cheddar cheese, cream, pepper, butter. 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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