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Bread

French Rusks

A yeast roll made with scalded milk, butter, sugar, and vanilla, baked until golden.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 11 ingredients
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Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

French Rusks

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the dough

  1. Add butter, sugar, and salt to scalded milk; let cool until lukewarm.

  2. Stir in dissolved yeast cake and 3 cups of flour.

  3. Cover and let rise until doubled in size.

  4. Add beaten egg and egg yolks, then enough flour to knead the dough.

  5. Let rise again, then shape into Parker House rolls.

Shape and bake

  1. Make three parallel creases on top of each roll before baking.

  2. Brush with slightly beaten egg whites mixed with 1 tablespoon cold water and vanilla.

  3. Sprinkle with sugar and bake at 350°F (175°C) until golden.

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 + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

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

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

  3. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + vanillatop 12% of all pairs
    Smell alikemoderate
    Cooked together19,241 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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 rolls their structure and chew.
Yeast
Produces carbon dioxide gas, which makes the dough rise and become light.
Butter
Adds fat that tenderizes the crumb and enriches the flavor.
Eggs
Add structure and richness, and help the dough bind and set in baking.
Sugar
Feeds the yeast and adds sweetness, and helps the crust brown.
Egg whites
Brushed on top to give a glossy sheen and help the crust brown.

The step that matters

Cool the scalded milk to lukewarm before adding the yeast. Yeast is killed by very hot liquid, so the milk must be cooled to lukewarm before the dissolved yeast cake goes in. If it is too hot, the dough will not rise properly.

Swap the vanilla

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

  1. Vanillathe original
  2. Raisinfits about as well
  3. Figfits less well
  4. Coconutfits less well

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