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Boston Brown Bread

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

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Boston Brown Bread

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. In a large bowl, mix the cornmeal, flour, sour milk, sweet milk, molasses, baking soda, and salt until well combined.

  2. Pour the mixture into a greased steaming mold.

Steam and brown

  1. Steam the bread for 3 hours.

  2. After steaming, place the bread in a preheated oven at 400°F (200°C) to brown for a few minutes.

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Milk + molassestop 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

Cornmeal
Forms the main body of the bread and gives it its coarse, crumbly texture.
Flour
Adds structure so the loaf holds together after steaming.
Sour milk
Its acidity reacts with the baking soda to lift and lighten the batter.
Molasses
Adds sweetness, moisture, and the dark color and flavor of the bread.
Baking soda
Reacts with the acidic sour milk to produce gas that makes the bread rise.

The step that matters

Steam the bread for 3 hours. Steaming is a moist, gentle heat that cooks the batter through without drying it. Keeping the mold sealed and the water boiling steadily matters, because a dry or uneven steam leaves the loaf dense or undercooked.

“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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