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Dessert

Scotch Oat Cookies

A simple cookie made with egg yolk, rolled oats, sugar, salt, melted fat, lemon extract, and egg white.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Scotch Oat Cookies

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 bake

  1. In a bowl, beat the egg yolk, slowly adding sugar and salt.

  2. Add lemon extract, rolled oats, and the stiffly beaten egg white.

  3. Drop spoonfuls of the mixture onto a greased baking pan.

  4. Bake for about 15 minutes or until brown.

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. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  2. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  3. Oats + sugartop 19% of all pairs
    Smell alikelow
    Cooked together3,548 recipes

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

  4. Oats + lemontop 20% of all pairs
    Smell alikemoderate
    Cooked together462 recipes

    Shared aroma: alpha-pinene (pine, turpentine).

  5. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Egg yolk
Enriches the dough and adds richness and binding to the cookies.
Rolled oats
Provide the bulk and chewy texture of the cookie.
Sugar
Adds sweetness and helps the cookies brown as they bake.
Egg white
Whipped to stiff peaks, it lightens the mixture and helps the cookies rise.

The step that matters

Folding in the stiffly beaten egg white. Whipped egg white holds air that lightens the mixture. Stirring it in too vigorously knocks out that air, so the cookies bake up denser and flatter.

Swap the lemon

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

  1. Vanillafits better
  2. Pumpkinfits better
  3. Datesfits better
  4. Lemonthe original

Fit is the average pairing score against egg, oats, sugar. 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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