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Dessert

Fairy Butter

A light, fluffy butter and powdered sugar mixture flavored with lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Fairy Butter

Ingredients

Directions

Make the butter

  1. Cream the butter thoroughly.

  2. Gradually add the powdered sugar, beating hard and fast until light and fluffy.

  3. Add the lemon juice and grated rind, then beat for an additional 3 minutes.

Serve

  1. Serve piled as it falls from the spoon, without smoothing.

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 + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

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

  2. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Butter
Creamed with sugar to trap air, giving the sauce its light, rich body.
Powdered sugar
Sweetens the butter and dissolves easily, helping it beat to a smooth, fluffy texture.
Lemon juice
Adds acidity that brightens the sweetness and balances the rich butter.
Lemon rind
Contributes fragrant lemon oils that add aroma without extra liquid.

The step that matters

Beating in the sugar. Creaming butter with sugar works best when the butter is soft and the sugar is added gradually. Beating fast and steadily traps air in the fat, which gives a light, fluffy texture. Adding the sugar all at once or using very cold butter can leave the mixture dense and grainy.

Swap the lemon

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

  1. Vanillafits better
  2. Figfits better
  3. Peachfits better
  4. Lemonthe original

Fit is the average pairing score against butter, sugar. 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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