Name: Boston Brown Bread
Ingredients: 2 cups whole wheat flour; 1 teaspoon salt; 1 cup water-ground meal; ¾ cup dark molasses; 1½ cups buttermilk; 2 teaspoons baking soda; ½ box seeded raisins (optional); 1 cup mixed chopped fruits (optional)

Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Boston Brown Bread

Ingredients

Directions

Make the batter

Sift together the whole wheat flour, salt, and water-ground meal.
Mix in the dark molasses and 1 cup of buttermilk.
Dissolve the baking soda in the remaining ½ cup of buttermilk and add to the mixture.
Fold in the raisins.
Add the mixed chopped fruits.

Steam and serve

Fill one-pound baking powder cans two-thirds full with the batter.
Place the cans in a vessel of warm water, cover with cloth and a lid, and steam for 3 hours, adding more water if necessary.

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.

Flour + raisintop 1% of all pairs

Smell alikestrong

Cooked together9,075 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + buttermilktop 8% of all pairs

Smell alikemoderate

Cooked together3,721 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Molasses + buttermilktop 11% of all pairs

Smell alikemoderate

Cooked together526 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Wheat + flourtop 12% of all pairs

Smell alikemoderate

Cooked together4,373 recipes

Shared aroma: isobutyraldehyde (malty, green).
Molasses + raisintop 12% of all pairs

Smell alikelow

Cooked together3,577 recipes

Shared aroma: ethanol (alcoholic, ethereal).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Whole wheat flour: Provides the structure and hearty body of the bread.
Water-ground meal: Adds coarse texture and a grainy, crumbly bite to the loaf.
Dark molasses: Adds sweetness, deep color, and moisture to the batter.
Buttermilk: Adds moisture and acidity that reacts with the baking soda to lift the loaf.
Baking soda: Reacts with the buttermilk's acid to produce gas that makes the bread rise.

The step that matters

Dissolve the baking soda in the buttermilk before adding it. Baking soda must be fully dissolved and mixed evenly so it reacts with the buttermilk's acid throughout the batter. Uneven mixing leaves pockets of gas-driven lift and dense or patchy texture.

“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.

More boston brown bread recipes

Ice Cream 3 See all 349 →

Molasses Sauce32 recipes

Wheat Gruel6 recipes

Tomato Soup526 recipes

Brown Bread461 recipes

Like knowing why a recipe works?

The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.

Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Boston Brown Bread