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Bread

Boston Brown Bread

A steamed bread made with Graham flour, cornmeal, molasses, sour milk, baking soda, and salt.

From an old cookbook · modernised transcription
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Why it works: Corn and milk are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 6,955 recipes. Both carry hexanal, which smells green, grassy. The science ↓

Boston Brown Bread

Ingredients

Directions

Make the batter

  1. Combine Graham flour, cornmeal, molasses, sour milk, baking soda dissolved in a little hot water, and salt in a bowl, then mix until well combined.

  2. Pour the mixture into a mold.

Steam

  1. Steam for 3 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. Corn + milktop 10% of all pairs
    Smell alikemoderate
    Cooked together6,955 recipes

    Shared aroma: hexanal (green, grassy).

  2. Flour + corntop 13% of all pairs
    Smell alikemoderate
    Cooked together6,165 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + molassestop 16% of all pairs
    Smell alikemoderate
    Cooked together10,429 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. Molasses + milktop 21% of all pairs
    Smell alikelow
    Cooked together7,243 recipes

    Shared aroma: furaneol (caramel, strawberry).

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

Graham flour
Forms the bulk of the crumb and gives the bread its hearty, wholesome structure.
Cornmeal (in the method)
Adds coarse texture and body to the crumb.
Molasses
Adds sweetness, dark color and moisture to the bread.
Sour milk
Provides acidity that reacts with the baking soda to help the bread rise.
Baking soda
Reacts with the acidic sour milk to produce gas that lightens the batter.

The step that matters

Dissolving the baking soda in hot water before combining. Baking soda must be fully dissolved so it reacts evenly with the acidic sour milk; clumps can leave pockets of bitterness or uneven rising.

“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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