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Dessert

Hard Sauce

A sweet sauce made from powdered sugar, butter, currant jelly, and cinnamon that hardens when cooled.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Sugar and cinnamon are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 30,779 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓

Hard Sauce

Ingredients

Directions

Make the sauce

  1. Whip the powdered sugar and butter together until creamy.

  2. Flavor the mixture with currant jelly and cinnamon. Stir and mix well.

Set

  1. Heap the mixture on a shallow dish or saucer.

  2. Set in a cool place to harden.

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. Sugar + cinnamontop 10% of all pairs
    Smell alikelow
    Cooked together30,779 recipes

    Shared aroma: guaiacol (smoky, sweet).

  2. Currant + cinnamontop 15% of all pairs
    Smell alikelow
    Cooked together4,099 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  3. Butter + cinnamontop 15% of all pairs
    Smell alikemoderate
    Cooked together17,784 recipes

    Shared aroma: anethole (sweet, anise).

  4. Butter + curranttop 17% of all pairs
    Smell alikemoderate
    Cooked together7,856 recipes

    Shared aroma: isoamyl acetate (banana, pear).

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

    Shared aroma: guaiacol (smoky, sweet).

Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 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

Powdered sugar
Provides sweetness and bulk, and dissolves into the butter to give the sauce its body.
Butter
Adds fat and richness, and whipping it with sugar makes the mixture creamy and smooth.
Currant jelly
Adds fruity sweetness and acidity, and flavors the sauce.

The step that matters

Set in a cool place to harden.. Butter firms as it cools, so the sugar and butter mixture only holds its shape if it is chilled long enough. Setting it too warm leaves the sauce soft and slumped.

Swap the currant

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

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits better
  4. Currantthe original

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