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Preserve

Rocks-cookies

Cookies made with brown sugar, flour, raisins, butter, eggs, baking soda, cold water, and walnuts.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Rocks-cookies

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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

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

  2. Dissolve the baking soda in the cold water.

Mix and shape

  1. In a large bowl, mix the brown sugar, flour, raisins, butter, eggs, and dissolved baking soda until thoroughly combined.

  2. Fold in the chopped walnuts.

  3. Drop large tablespoonfuls of the mixture onto a baking pan.

Bake

  1. Bake for 12-15 minutes or until 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. Flour + raisintop 1% of all pairs
    Smell alikestrong
    Cooked together9,075 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + walnuttop 12% of all pairs
    Smell alikemoderate
    Cooked together5,873 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Raisin + walnuttop 13% of all pairs
    Smell alikemoderate
    Cooked together647 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  5. Sugar + raisintop 13% of all pairs
    Smell alikemoderate
    Cooked together12,481 recipes

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

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

Eggs
Bind the dough and add structure as they set in the oven.
Butter
Adds fat and richness, helping the cookies spread and turn tender.
Baking soda
Reacts with the dough to help the cookies rise and brown.
Brown sugar
Adds sweetness and moisture, and helps the cookies brown and stay chewy.
Flour
Provides the structure that holds the cookies together as they bake.
English walnuts
Add crunch and a nutty flavor that contrasts with the soft dough.

The step that matters

Dissolving the baking soda in the cold water. Baking soda must be fully dissolved so it spreads evenly through the dough. Undissolved pockets can leave bitter, soapy spots and uneven rising.

Swap the walnut

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

  1. Almondfits better
  2. Chestnutfits better
  3. Pistachiofits better
  4. Walnutthe original

Fit is the average pairing score against sugar, flour, raisin, butter, 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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