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Dessert

Brussels Biscuits

A sweet biscuit made with candied citrus peel, brandy, comfits, and butter.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Brussels Biscuits

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the batter

  1. In a bowl, cream the butter until it resembles thick cream.

  2. Gradually add flour, sugar, salt, and eggs, mixing well after each addition.

  3. Stir in the chopped candied peel, brandy, and citrus rind.

Bake and serve

  1. Pour the mixture into buttered oblong tins, about 2 inches deep.

  2. Sprinkle the surface with comfits and a little fine sugar.

  3. Bake in a preheated oven at 400°F (200°C) until lightly colored.

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 + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Cognac brandy + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together162 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  3. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  4. Cognac brandy + orangetop 15% of all pairs
    Smell alikemoderate
    Cooked together134 recipes

    Shared aroma: beta-damascenone (apple, rose).

  5. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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 biscuits a tender, rich crumb.
Eggs
Bind the batter and add structure and richness as they set in the oven.
All-purpose flour
Provides the main structure that holds the biscuit together as it bakes.
Sugar
Adds sweetness and helps the biscuits brown lightly on top.
Candied citrus peel
Adds chewy texture and concentrated citrus aroma throughout the biscuits.

The step that matters

Creaming the butter. Beating butter until light and thick traps air that expands in the oven, so cooking it too briefly or skipping this stage leaves the biscuits dense.

Swap the orange

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

  1. Vanillafits better
  2. Raisinfits better
  3. Peachfits better
  4. Orangethe original

Fit is the average pairing score against cognac brandy, butter, flour, sugar, egg. 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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