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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) · 3 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

  1. Cream the butter in a bowl until smooth.

  2. Gradually add the powdered sugar while beating vigorously until light and fluffy.

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

  4. Serve immediately as it falls from the spoon, without smoothing it out.

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 until smooth, it traps air and gives the sauce its rich, light body.
Powdered sugar
Beaten into the butter, it sweetens the mixture and helps it turn light and fluffy.
Lemon juice and rind
Adds acidity and bright aroma that cut through the sweetness and richness of the butter.

The step that matters

Beating in the powdered sugar. Adding sugar gradually while beating lets the fat trap air and dissolve the sugar evenly. Adding it all at once can leave a grainy, dense texture instead of a light, fluffy one.

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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