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Dessert

Fairy Butter

A sweet butter made with egg yolks, orange‑flower water, powdered sugar, and 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 egg yolks with the orange-flower water and powdered sugar until smooth.

  2. Add the butter and mix until combined.

  3. Force the mixture through a clean cloth by wringing and squeezing hard to create a fine paste.

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

Egg yolks
Egg yolk lecithin emulsifies the butter into the mixture, giving a smooth, rich body.
Butter
Fat adds richness and a smooth, melting texture once it is worked into the paste.
Powdered sugar
Dissolves easily into the yolks, adding sweetness and a fine, even texture.
Orange-flower water
Adds a delicate floral aroma that defines the flavour of this dish.

The step that matters

Forcing the mixture through a cloth. Pressing the mixture through cloth breaks up lumps and fibres, so the paste becomes smooth. Stopping early leaves a grainy texture, because the butter and yolks have not been fully blended and worked together.

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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