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Dessert

The Hermit’s Rock Cakes

A baked cake made with butter, sugar, eggs, flour, and optional caraway seeds or currants.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Flour and caraway match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 1,435 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

The Hermit’s Rock Cakes

Oven, in the book's wordsA quick oven

Ingredients

Directions

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

Prepare

  1. Preheat the oven to 400°F (200°C).

  2. Beat the butter until creamy.

Make the dough

  1. Add the egg yolks, sugar, and flour; mix into a stiff paste.

  2. In a separate bowl, beat the egg whites until stiff and fold into the mixture.

  3. If desired, add caraway seeds or plumped currants.

  4. Drop the mixture onto a baking sheet in rough pieces the size of large walnuts.

Bake

  1. Bake for 20 minutes until slightly browned.

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 + carawaytop 6% of all pairs
    Smell alikestrong
    Cooked together1,435 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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 richness and a tender, crumbly texture as it is creamed with the sugar.
Flour
Provides the structure that holds the rock cakes together as they bake.
Egg yolks
Add richness and help bind the mixture into a stiff paste.
Egg whites
Whipped and folded in, they lighten the mixture and help it rise.
Sugar
Adds sweetness and contributes to light browning on the surface.

The step that matters

Folding in the beaten egg whites. Whites must be beaten until stiff and folded gently. Overmixing deflates the foam, leaving dense rock cakes instead of light, airy ones.

Swap the caraway

The recipe marks caraway as optional. How well each one fits the dish's main ingredients (butter, sugar, egg, flour):

  1. Cinnamonfits better
  2. Nutmegfits better
  3. Jalapenofits about as well
  4. Carawaythe original

Fit is the average pairing score against butter, 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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