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Spinach on Toast

A simple dish of boiled spinach seasoned with pepper, salt, and butter served over toasted bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Spinach and pepper are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,400 recipes. Both carry nonanal, which smells fat, citrus. The science ↓

Spinach on Toast

Ingredients

Directions

Prepare the spinach

  1. Boil the spinach for 1 hour.

  2. Chop the spinach very fine.

  3. Add pepper, salt, and butter to the spinach.

  4. Simmer the mixture in a saucepan for 10 minutes.

Serve on toast

  1. Toast the bread and butter it.

  2. Serve the spinach on the buttered toast.

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. Spinach + peppertop 6% of all pairs
    Smell alikemoderate
    Cooked together3,400 recipes

    Shared aroma: nonanal (fat, citrus).

  2. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

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

  3. Spinach + breadtop 15% of all pairs
    Smell alikemoderate
    Cooked together466 recipes

    Shared aroma: 2-undecenal (sweet).

  4. Pepper + breadtop 16% of all pairs
    Smell alikemoderate
    Cooked together20,964 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Pepper + buttertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

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

What each ingredient does

Spinach
Forms the main filling, supplying the leafy flavor and bulk of the dish.
Butter
Adds richness and fat, carrying flavor into the spinach and onto the toast.
Bread
Provides a toasted, crisp base that holds the spinach without going soggy.

The step that matters

Boiling the spinach for 1 hour. Prolonged boiling breaks down the green chlorophyll pigments and softens the leaves too far, so the spinach turns dull, mushy, and loses much of its texture and flavor.

Swap the spinach

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

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

Fit is the average pairing score against pepper, butter, 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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