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Welsh Rarebit

A cheese sauce made with cheese, butter, mustard, cayenne, and cream, served hot over crackers.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Welsh Rarebit

Ingredients

Directions

Prepare

  1. Mince the cheese.

  2. Combine all ingredients in a chafer.

Cook and serve

  1. Stir continually until smooth and thick like cream.

  2. Serve immediately on hot crackers.

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 + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

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

  2. Cheese + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together7,962 recipes

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

  3. Pepper + mustardtop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  4. Cheese + mustardtop 11% of all pairs
    Smell alikemoderate
    Cooked together1,805 recipes

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

  5. Cheese + creamtop 15% of all pairs
    Smell alikemoderate
    Cooked together2,655 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
Forms the body of the sauce as it melts and gives it its rich flavor.
Egg
Thickens the sauce as it heats and gives it a smooth, rich body.
Cream
Adds moisture and a silky texture that keeps the sauce spreadable.
Butter
Adds fat that helps the sauce stay smooth and glossy.
Dry mustard
Adds a sharp flavor that balances the richness of the cheese.

The step that matters

Stir continually until smooth and thick. Cheese proteins tighten and fat separates when overheated, and egg can scramble. Keep the heat gentle and stir constantly so the sauce stays smooth and thickens evenly.

Swap the mustard

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

  1. Potatofits better
  2. Capsicumfits about as well
  3. Asparagusfits about as well
  4. Mustardthe original

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