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Welsh Rare-bit, English Style

A toasted bread topped with a melted cheese and mustard mixture.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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 Rare-bit, English Style

Ingredients

Directions

Prepare

  1. Cut the cheese into very fine pieces.

  2. Mix the cheese with the butter, bread crumbs, mustard, salt, and pepper until smooth.

Assemble and bake

  1. Spread the mixture on buttered toast.

  2. Place the toast in the oven until the cheese is well melted.

  3. 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. Cheese + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together2,130 recipes

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

  3. Cheese + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together7,962 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. Cheese + mustardtop 11% of all pairs
    Smell alikemoderate
    Cooked together1,805 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

Cheese
Melts into a smooth, rich topping that gives the rarebit its main flavour and body.
Butter
Adds fat that helps the cheese melt smoothly and softens the mixture.
Bread crumbs
Thicken the cheese mixture so it holds together on the toast rather than running off.
Mustard
Adds sharpness that balances the richness of the melted cheese.

The step that matters

Melting the cheese in the oven. Cheese heated too long or too hot becomes greasy and tough as its proteins tighten and fat separates. Watch it closely and stop once it is melted and smooth.

Swap the mustard

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

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

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