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Dessert

Fairy Butter

A sweet butter confection made with egg yolks, orange‑flower water, powdered sugar, and fresh butter.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Egg and butter are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 118,967 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Fairy Butter

Ingredients

Directions

  1. In a mortar, beat the yolks of the eggs smoothly with the orange-flower water and powdered sugar until a fine paste forms.

  2. Add the butter and mix well.

  3. Force the mixture through a clean cloth by wringing and squeezing the butter hard.

  4. The butter will drop onto the plate in various sizes depending on the cloth's holes.

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. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Orange + sugartop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

    Shared aroma: beta-damascenone (apple, rose).

  4. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

  5. Orange + buttertop 23% of all pairs
    Smell alikemoderate
    Cooked together7,301 recipes

    Shared aroma: 3-hexenal (apple, fruity).

Orange and sugar barely smell alike, yet cooks put them together in 19,212 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Hard-boiled egg yolks
Their fat and emulsifying power bind the butter into a smooth, stable paste.
Butter
Provides the fat that forms the body and rich texture of the finished butter.
Powdered sugar
Sweetens the mixture and dissolves smoothly into the yolk paste.
Orange-flower water
Adds a floral aroma that flavours the butter.

The step that matters

Forcing the mixture through the cloth. The butter must be pressed firmly so the mixture breaks into drops; if the paste is too soft or not squeezed hard enough, it will not pass through cleanly and the drops will not hold their shape.

Swap the orange

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

  1. Vanillafits better
  2. Lemonfits better
  3. Raisinfits better
  4. Orangethe original

Fit is the average pairing score against egg, sugar, butter. 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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