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Bread

Boston Brown Bread

A moist, sweet bread made with molasses, cornmeal, brown flour, raisins, and buttermilk, baked by steaming.

From an old cookbook · modernised transcription
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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 ↓

Boston Brown Bread

Ingredients

Directions

Make the batter

  1. Dissolve the baking soda in a small amount of boiling water and add it to the molasses.

  2. In a large bowl, mix all ingredients together and beat until smooth.

  3. Pour the mixture into a greased mold.

Steam

  1. Steam for three hours.

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. Buttermilk + flourtop 8% of all pairs
    Smell alikemoderate
    Cooked together3,721 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Buttermilk + molassestop 11% of all pairs
    Smell alikemoderate
    Cooked together526 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Molasses + raisintop 12% of all pairs
    Smell alikelow
    Cooked together3,577 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

    Shared aroma: isobutyraldehyde (malty, green).

Egg and flour barely smell alike, yet cooks put them together in 106,462 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

Baking soda
Reacts with the acidic buttermilk and molasses to produce gas that lightens the bread.
Buttermilk
Provides acidity that activates the baking soda and adds moisture and tenderness.
Molasses
Adds sweetness, dark color and moisture, and its acidity helps the baking soda react.
Eggs
Bind the batter and add structure as the bread sets.
Brown flour
Provides the main structure of the bread.
Cornmeal
Adds a coarser texture and body to the crumb.

The step that matters

Dissolving the baking soda in boiling water before adding it to the molasses. Baking soda needs an acid to release carbon dioxide. Dissolving it evenly in the molasses first spreads it through the batter so the bread rises uniformly rather than in patches.

“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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