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Dessert

J Rusks

A yeast-based batter is baked into hard biscuits called rusks.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

J Rusks

Oven, in the book's wordsA moderately quick oven

Ingredients

Directions

Make the dough

  1. Beat the eggs well and mix with the milk.

  2. Melt the butter and add it to the egg and milk mixture.

  3. Stir in the yeast.

  4. Gradually add flour to create a light batter.

  5. Let the batter rise near the fire for 30 minutes.

  6. Add more flour to make the mixture a little stiffer, but not too stiff. Work the dough well.

Shape and bake

  1. Divide the dough into small loaves or cakes about 5-6 inches wide, then flatten them.

  2. Bake until cooked.

  3. Cool the baked pieces.

Slice and brown

  1. Slice them to the thickness of rusks.

  2. Put the slices back in the oven to brown slightly.

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Egg + buttertop 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

Eggs
Bind the dough and add richness and structure as they set in baking.
Milk
Adds moisture and softness to the batter and dough.
Butter
Adds fat for tenderness and a richer flavour.
Yeast
Produces gas that makes the batter rise and gives the crumb a lighter texture.
Flour
Forms the gluten and starch structure that sets the dough into a loaf.

The step that matters

Let the batter rise near the fire for 30 minutes. Yeast needs warmth to produce gas, so the batter must rise before it is stiffened with more flour. Too little rising leaves the rusks dense, while adding too much flour before the rise stops the dough from expanding.

“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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