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Deviled Toast

A toasted bread topped with a butter, mustard, paprika, onion juice, and cheese mixture.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Deviled Toast

Oven, in the book's wordsA hot oven

Ingredients

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the toast

  1. Cut the bread into thin slices.

  2. Toast the slices slowly until golden brown.

  3. Mix butter with dry mustard, paprika, and onion juice.

  4. Spread the mixture on the toasted bread.

Top and bake

  1. Sprinkle with grated cheese.

  2. Place in a 400°F (200°C) oven for 3 minutes.

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. Mustard + oniontop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

  2. Butter + cheesetop 8% of all pairs
    Smell alikemoderate
    Cooked together7,962 recipes

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

  3. Mustard + cheesetop 11% of all pairs
    Smell alikemoderate
    Cooked together1,805 recipes

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

  4. Wheat + mustardtop 12% of all pairs
    Smell alikestrong
    Cooked together134 recipes

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

  5. Wheat + buttertop 14% of all pairs
    Smell alikemoderate
    Cooked together2,002 recipes

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

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Bread
Provides the crisp, sturdy base that holds the spread and cheese.
Butter
Carries the seasonings and adds fat, richness, and browning to the toast.
Grated cheese
Melts and browns on top, adding savory flavor and a golden surface.

The step that matters

Toasting the bread slowly until golden brown. Slow toasting dries the surface evenly and browns it through the Maillard reaction, giving a crisp base that will not go soggy under the buttery spread. Fast toasting can scorch the outside while the inside stays soft.

Swap the onion

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

  1. Lettucefits better
  2. Potatofits better
  3. Chivefits better
  4. Onionthe original

Fit is the average pairing score against wheat, butter, mustard, cheese. 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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