Name: Ginger Snaps
Ingredients: 1 cup butter; 1 cup sugar; 1 cup molasses; ⅓ cup vinegar; 1 egg; 1 tablespoon ginger; 1 teaspoon salt; 1 teaspoon baking soda; Flour (enough to roll out)

Why it works: Sugar and molasses are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 9,225 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Ginger Snaps

Oven, in the book's wordsA hot oven

Ingredients

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Make the dough

Cream the butter and sugar together.
Add the beaten egg, salt, and ginger to the mixture.
Dissolve the baking soda in the vinegar and add it to the molasses.
Stir the molasses mixture into the butter and sugar mixture and beat well.
Add enough flour to form a dough that can be rolled out.

Bake

Roll the dough thin and bake in a hot oven at 400°F (200°C).

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.

Sugar + molassestop 11% of all pairs

Smell alikemoderate

Cooked together9,225 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Molasses + gingertop 14% of all pairs

Smell alikelow

Cooked together4,116 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Sugar + flourtop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Ginger + flourtop 15% of all pairs

Smell alikemoderate

Cooked together8,564 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: Adds fat that tenderizes the dough and helps it spread and brown.
Sugar: Sweetens the cookies and helps them brown and crisp as they bake.
Molasses: Adds moisture, deep sweetness, and the dark color and flavor of the cookies.
Vinegar: Its acidity reacts with baking soda to release gas, helping the cookies lift and stay tender.
Baking soda: Reacts with the vinegar to produce gas that leavens the dough.
Flour: Provides the structure that holds the dough together for rolling and baking.

The step that matters

Roll the dough thin. Thin dough heats through quickly and dries out, so the cookies bake crisp. Thick dough stays soft and cakey in the middle.

Swap the ginger

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

Cinnamonfits better
Nutmegfits better
Allspicefits about as well
Gingerthe original

Fit is the average pairing score against butter, sugar, molasses, vinegar, egg, 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.