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Welsh Rare-bit

A Welsh cheese toast made by melting cheese with ale and dry mustard, then pouring over toasted bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Cheese and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,130 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Welsh Rare-bit

Oven, in the book's wordsA quick oven

Ingredients

Directions

Prepare

  1. Grate the cheese.

  2. In a saucepan over low heat, mix the cheese with the ale until smooth.

  3. Stir in the dry mustard.

Toast and serve

  1. Toast the bread slices until golden brown.

  2. Pour the melted 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. Cheese + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together2,130 recipes

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

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

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

  3. Mustard + breadtop 16% of all pairs
    Smell alikemoderate
    Cooked together1,484 recipes

    Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).

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 sauce that gives the rarebit its body and flavor.
Ale
Thins the melted cheese and adds a light, malty aroma.
Dry mustard
Adds a sharp, pungent note that balances the richness of the cheese.
Bread
Provides a crisp, toasted base to hold the cheese sauce.

The step that matters

Melt the cheese over low heat. High heat can make cheese separate and turn grainy or stringy. Gentle heat, with the ale helping the cheese emulsify, keeps the sauce smooth.

Swap the mustard

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

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

Fit is the average pairing score against cheese, 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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