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Bread

Boston Brown Bread

A steamed and baked rye and cornmeal bread sweetened with molasses.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Rye and flour match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 1,320 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Boston Brown Bread

Ingredients

Directions

Prepare the batter

  1. Dissolve the baking soda in a little hot water and add it to the sour milk, stirring until it foams.

  2. In a large bowl, combine the rye flour, cornmeal, molasses, sour milk mixture, and salt. Stir the ingredients well and beat the mixture vigorously.

Steam and bake

  1. Pour the batter into a well‑buttered round deep baking tin while it is still cold.

  2. Steam the bread for 2½ hours, then bake for 15 to 20 minutes.

  3. Serve warm or cold.

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. Rye + flourtop 8% of all pairs
    Smell alikestrong
    Cooked together1,320 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Rye + milktop 12% of all pairs
    Smell alikemoderate
    Cooked together918 recipes

    Shared aroma: ethyl 2-methylbutyrate (fruity, apple).

  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. Rye + molassestop 16% of all pairs
    Smell alikelow
    Cooked together804 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

Rye flour
Gives the bread its dense, hearty structure and earthy flavour.
Cornmeal
Adds coarse body and a crumbly, moist texture to the loaf.
Molasses
Adds sweetness, dark colour and a deep, rich flavour.
Sour milk
Its acidity reacts with the baking soda to lift and aerate the batter.
Baking soda
Reacts with the acidic sour milk to produce gas that leavens the bread.

The step that matters

Steaming the bread. Steaming keeps the loaf moist while the leavening sets its rise. Checking that the tin is well buttered and the batter is fully stirred helps the bread release cleanly and rise evenly.

“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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