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Dessert

Peruvian Biscuits

A sweet biscuit made with flour, rice flour, arrowroot, butter, sugar, eggs, and oil.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Flour and arrowroot match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 525 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Peruvian Biscuits

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate 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).

Make and shape the dough

  1. In a bowl, combine flour, rice flour, arrowroot, butter, sugar, eggs, and oil to form a dough.

  2. Roll the dough into strips the thickness of your finger.

  3. Cut the strips into pieces the size of small marbles.

Bake

  1. Place on slightly greased baking sheets and bake 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 + arrowroottop 2% of all pairs
    Smell alikestrong
    Cooked together525 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Rice + arrowroottop 8% of all pairs
    Smell alikemoderate
    Cooked together200 recipes

    Shared aroma: coumarin (sweet, hay).

  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

Flour
Provides the main structure that holds the dough together as it bakes.
Rice flour
Adds a light, tender, crisp texture because it contains little gluten.
Arrowroot
Starch that lightens the texture and helps the biscuits stay crisp.
Butter
Adds fat that makes the biscuits tender and rich in flavour.
Sugar
Adds sweetness and helps the biscuits brown to a golden colour.
Eggs
Bind the dough together and add moisture and richness.

The step that matters

Bake until golden. Sugar and fat brown quickly at this heat, so pieces left too long turn dark and dry. Pulling them once golden keeps them tender and crisp.

Swap the arrowroot

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

  1. Leekfits about as well
  2. Sweet potatofits about as well
  3. Asparagusfits about as well
  4. Arrowrootthe original

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