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Rusk

A twice‑baked bread made from a yeast dough enriched with milk, butter, lard, sugar, eggs, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Rusk

Ingredients

Directions

Make the sponge

  1. Warm the milk.

  2. Add the butter, lard, sugar, and well-beaten eggs to the milk.

  3. Stir in flour to make a moderately stiff sponge.

  4. Add the yeast to the sponge.

  5. Set the mixture in a warm place to rise for three to four hours.

Make and shape the dough

  1. Mix in more flour to make a soft dough.

  2. Let the dough rise again.

  3. Dissolve a little baking soda in a spoonful of milk and work it into the dough.

  4. Roll the dough into sheets ½ inch thick and spread with a thin layer of butter.

  5. Cut the sheets into squares and fold them over in a pocketbook shape.

  6. Place the folded squares on tins or in pans to rise for a little while before baking.

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

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

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 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).

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

Flour
Builds the gluten network that gives the dough its structure and chew.
Yeast
Ferments the sugars and produces gas that makes the dough rise.
Eggs
Add structure and richness to the dough as they set with heat.
Butter
Adds fat that tenderizes the crumb and separates the layers when spread between sheets.
Lard
Adds fat that tenderizes the crumb and keeps it soft.
Sugar
Feeds the yeast and adds sweetness and mild browning.

The step that matters

Working the baking soda into the dough. Baking soda only leavens when it meets an acid and is spread evenly. Unevenly mixed pockets can leave soapy or bitter patches and uneven rise.

“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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