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Dessert

Rusk with Two Eggs

A rusk made with milk, yeast, flour, sugar, butter, eggs, nutmeg, and raisins, baked into hard cakes.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 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 ↓

Rusk with Two Eggs

Ingredients

Directions

Make the sponge

  1. Combine 1 pint of new milk, 1 cup of hop yeast, and enough flour to make a batter.

  2. Let the mixture sit overnight.

Make the dough

  1. In the morning, add ½ pint more new milk, 1 cup of sugar, 1 cup of butter, 1 egg, and nutmeg.

  2. Mix in enough flour to make a stiff dough.

  3. Let the dough rise.

Shape and bake

  1. Roll it out and cut it into small cakes.

  2. Allow the cakes to rise again.

  3. Bake the cakes until done.

  4. Just before they are finished, brush the tops with a mixture of 1 teaspoon sugar and 1 beaten egg.

  5. Return to the oven until lightly 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 + raisintop 1% of all pairs
    Smell alikestrong
    Cooked together9,075 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Nutmeg + raisintop 6% of all pairs
    Smell alikemoderate
    Cooked together5,377 recipes

    Shared aroma: alpha-terpineol (lilac, floral).

  3. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Flour + nutmegtop 8% of all pairs
    Smell alikemoderate
    Cooked together18,623 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

Hop yeast
Ferments the batter so the dough rises and becomes light.
Flour
Provides the structure that holds the dough and cakes together.
Butter
Adds fat that softens the crumb and gives a rich texture.
Egg
Adds richness and structure, and the beaten egg glaze browns the tops.
Sugar
Adds sweetness and helps the tops brown in the oven.

The step that matters

Brushing the tops with the egg and sugar mixture. Applied too early, the glaze over-browns or burns before the cakes are cooked through. Applied just before they finish, the sugars and egg proteins brown evenly and give a glossy crust.

Swap the raisin

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

  1. Vanillafits about as well
  2. Raisinthe original
  3. Figfits less well
  4. Lemonfits less well

Fit is the average pairing score against milk, flour, sugar, butter, egg, nutmeg. 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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