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Boston Brown Bread

A dense, sweet bread made with cornmeal, rye flour, all-purpose flour, molasses, and sour milk, baked by boiling.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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. In a bowl, mix cornmeal, rye flour, all-purpose flour, molasses, salt, and baking soda.

  2. Add sour milk gradually to form a stiff batter.

Steam and serve

  1. Transfer the batter to a greased tin pail and cover tightly.

  2. Boil the pail in a pot of water for four 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. 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

Cornmeal
Gives the bread its coarse texture and characteristic golden color.
Rye flour
Adds a dense crumb and earthy flavor to the bread.
All-purpose flour
Provides gluten-based structure so the batter holds together while steaming.
Molasses
Adds sweetness, moisture, and deep color to the bread.
Baking soda
Reacts with the acidic sour milk to produce gas that lightens the bread.
Sour milk
Supplies moisture and acidity that activates the baking soda.

The step that matters

Cover the pail tightly before steaming. A tight seal traps steam around the batter, keeping it moist and helping it rise evenly. A loose cover lets steam escape, which can leave the bread dry and dense.

“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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