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Dessert

Hard Sauce

A sweet butter and powdered sugar sauce with egg white, lemon extract, and nutmeg.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and nutmeg match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 11,318 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Hard Sauce

Ingredients

Directions

Prepare

  1. Scald a bowl and spoon.

Make the sauce

  1. Cream the butter until light and smooth.

  2. Gradually add the powdered sugar, mixing well.

  3. Beat the egg white until stiff and fold it into the butter and sugar mixture.

  4. Add the lemon extract and mix well.

  5. Transfer to a dish and sprinkle with nutmeg.

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. Lemon + nutmegtop 5% of all pairs
    Smell alikestrong
    Cooked together11,318 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Butter + nutmegtop 16% of all pairs
    Smell alikemoderate
    Cooked together24,377 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  4. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Egg + nutmegtop 17% of all pairs
    Smell alikelow
    Cooked together24,744 recipes

    Shared aroma: acetic acid (sour, vinegar).

Egg and nutmeg barely smell alike, yet cooks put them together in 24,744 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
Provides the fat base that gives the sauce its rich, creamy body.
Powdered sugar
Adds sweetness and dissolves smoothly into the butter for a fine texture.
Egg white
Whipped to stiff peaks, it traps air and lightens the sauce.
Lemon extract
Adds a bright citrus aroma that balances the sweetness.

The step that matters

Folding in the stiff egg white. Whipped egg white holds air that gives the sauce its lightness. Folding gently keeps that air in, while vigorous stirring deflates it and makes the sauce dense.

Swap the lemon

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

  1. Vanillafits about as well
  2. Lemonthe original
  3. Raisinfits about as well
  4. Figfits about as well

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