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Bread

Boston Brown Bread

A steamed bread made with flour, cornmeal, molasses, sweet milk, baking soda, baking powder, eggs, and salt.

From an old cookbook · modernised transcription
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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

Make the batter

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

  2. Pour the mixture into a greased steaming mold.

Steam

  1. Steam for 5 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 + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

    Shared aroma: 2-nonenal (fatty, green).

  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

Flour
Provides the structure that holds the loaf together as it sets.
Cornmeal
Gives the bread its coarse, dense texture and body.
Molasses
Adds sweetness, dark colour and moisture to the crumb.
Baking soda
Reacts with the acidity in the batter to produce gas that lifts the bread.
Baking powder
Provides extra rising power so the loaf lightens during steaming.
Eggs
Bind the batter and help set the structure of the loaf.

The step that matters

Steam for 5 hours. Steam must stay steady and the mold must be sealed so water does not enter. Gentle, continuous heat sets the batter evenly without drying the loaf, and a long steam time is needed for a fully cooked centre.

“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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