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Dessert

Lemon Crackers

A baked lemon cracker made with egg whites, sugar, lard, salt, ammonium carbonate, milk, lemon essence, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Lemon Crackers

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the dough

  1. Preheat the oven to 350°F (175°C).

  2. Beat the egg whites until stiff.

  3. In a bowl, mix the sugar, lard, and salt.

  4. Dissolve the carbonate ammonia in the warm sweet milk and add to the mixture.

  5. Stir in the lemon essence.

  6. Gradually add flour until the dough is very stiff.

Shape and bake

  1. Roll the dough thin and cut into desired shapes.

  2. Prick each piece with a fork.

  3. Bake in the preheated oven until lightly golden.

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. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

  4. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Lemon + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Milk and flour barely smell alike, yet cooks put them together in 78,219 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

Egg whites
Beaten until stiff, they add airiness and lightness to the dough.
Carbonate ammonia
Releases gas as it breaks down in the oven, helping the crackers rise and become crisp.
Lard
Provides fat that tenderizes the dough and gives a short, crisp texture.
Sugar
Adds sweetness and helps the crackers brown lightly in the oven.
Flour
Forms the structure of the dough, which is mixed very stiff for shaping.

The step that matters

Beating the egg whites until stiff. Stiff egg whites trap air that expands in the oven, so under-beaten whites give a denser, less light cracker.

Swap the lemon

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

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

Fit is the average pairing score against egg, sugar, milk, flour. 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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