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Dessert

Boston Lemon Snaps

Boston Lemon Snaps are small, lightly golden biscuits made with flour, butter, sugar, eggs, cream of tartar, and lemon flavoring.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Boston Lemon Snaps

Oven, in the book's wordsA cool oven

Ingredients

Directions

The book says “a cool oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the dough

  1. Preheat the oven to 300°F (150°C).

  2. In a bowl, rub the butter into the flour until combined.

  3. Add the sugar, eggs, cream of tartar, and lemon flavoring; mix until smooth.

Shape and bake

  1. Break the dough into small pieces and roll into balls.

  2. Place the balls on baking sheets and flatten them with your hand.

  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. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  2. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

All-purpose flour
Provides the structure that holds the cookies together as they bake.
Unsalted butter
Adds richness and tenderness, and helps the dough bind with the flour.
Granulated sugar
Sweetens the cookies and contributes to their crisp texture and light browning.
Eggs
Bind the dough and add structure and moisture to the cookies.
Cream of tartar
Acidifies the dough, adding tenderness and a smoother, lighter texture.

The step that matters

Flattening the balls. The dough is stiff and spreads little, so each ball must be pressed flat before baking; unevenly flattened cookies bake unevenly, with some too thick and others overbaked at the edges.

Swap the lemon

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

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

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