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Welsh Rarebit

A melted cheese sauce served over toasted bread.

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

Make the sauce

  1. Melt the butter in a saucepan.

  2. Add the cheese cut into small pieces and stir until melted.

  3. Gradually add the milk or ale and mustard, seasoning to taste.

Serve

  1. Prepare hot buttered toast.

  2. Pour the cheese mixture over the toast and 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. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

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

  2. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

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

  4. Milk + breadtop 11% of all pairs
    Smell alikemoderate
    Cooked together11,466 recipes

    Shared aroma: 2-undecenal (sweet).

  5. Cheddar cheese + milktop 11% of all pairs
    Smell alikemoderate
    Cooked together1,964 recipes

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

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 sauce that coats the toast and carries the flavour.
Butter
Adds fat that helps the cheese melt smoothly and gives a rich texture.
Milk or ale
Loosens the melted cheese into a pourable sauce with moisture.
Mustard
Adds sharpness that balances the richness of the cheese.
Bread
Provides a crisp base that holds the cheese sauce.

The step that matters

Melting the cheese gently. Cheese held at high heat turns stringy or greasy because its proteins tighten and fat separates. Keeping the heat low and stirring while adding the cheese helps it melt into a smooth sauce.

Swap the mustard

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

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

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