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Pistachio Biscuits

A baked biscuit made with pistachios, sugar, egg whites, flour, and spinach for color.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Pistachio and spinach match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 110 recipes. Both carry nonanal, which smells fat, citrus. The science ↓

Pistachio Biscuits

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).

Make the dough

  1. In a bowl, mix pounded pistachios, sugar, and egg whites until well combined.

  2. Add a little spinach to the mixture for color.

  3. Gradually incorporate flour until a dough forms.

Bake and serve

  1. Shape the dough into biscuits and place them on a baking sheet.

  2. Bake for 15-20 minutes or until lightly golden.

  3. Let cool before serving.

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. Pistachio + spinachtop 1% of all pairs
    Smell alikestrong
    Cooked together110 recipes

    Shared aroma: nonanal (fat, citrus).

  2. Pistachio + flourtop 7% of all pairs
    Smell alikestrong
    Cooked together505 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Spinach + flourtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,564 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

Egg and flour barely smell alike, yet cooks put them together in 106,462 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

Pounded pistachios
Provide the main nutty flavor and body of the biscuit dough.
Egg whites
Bind the mixture and help hold the biscuits together as they set.
Flour
Adds structure so the mixture forms a dough that holds its shape.
Sugar
Sweetens the biscuits and helps them brown lightly in the oven.

The step that matters

Gradually incorporate flour until a dough forms. Adding flour gradually lets you stop once the dough holds its shape, since too much flour makes biscuits dry and tough.

Swap the spinach

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

  1. Arrowrootfits better
  2. Shallotfits about as well
  3. Beetrootfits about as well
  4. Spinachthe original

Fit is the average pairing score against pistachio, sugar, 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.

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