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Boston Lemon Crackers

A lemon-flavored cracker made with flour, butter, sugar, ammonia, lemon essence, and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Flour and butter 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 ↓

Boston Lemon Crackers

Oven, in the book's wordsA moderately brisk oven

Ingredients

Directions

The book says “a moderately brisk oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

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

  2. In a large bowl, combine the flour, butter, sugar, ammonia, essence of lemon, and water.

  3. Mix until a dough forms.

Shape and bake

  1. Shape the dough into small round biscuits, slightly larger than picnic crackers.

  2. Place the biscuits on a baking sheet and bake until golden brown.

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. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

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

  4. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

Flour and butter 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

Flour
Provides the structure that holds the dough together and sets as it bakes.
Butter
Adds fat that tenderizes the crackers and gives a rich, short texture.
Sugar
Adds sweetness and helps the surface brown as it bakes.
Essence of lemon
Adds the bright lemon aroma that defines the flavor of the crackers.

The step that matters

Bake until golden brown. Sugar browns quickly near the end of baking, so the biscuits can scorch or turn bitter if left in too long. Watch the color rather than the clock.

Swap the lemon

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

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

Fit is the average pairing score against flour, 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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