Name: Boston Brown Bread
Ingredients: 3 cups rye flour; 2 cups cornmeal; 1½ cups wheat flour; 1 cup Porto Rican molasses; 3 cups milk; ¼ teaspoon salt; 1 teaspoon baking soda

Why it works: Rye and wheat match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 404 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Boston Brown Bread

Ingredients

Directions

Make the batter

In a large bowl, mix together the rye flour, cornmeal, wheat flour, Puerto Rican molasses, milk, salt, and baking soda dissolved in a little hot water.
Pour the mixture into a very tight mold.

Steam and serve

Boil for 4 hours.
Serve hot.

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.

Rye + wheattop 1% of all pairs

Smell alikestrong

Cooked together404 recipes

Shared aroma: coumarin (sweet, hay).
Wheat + milktop 6% of all pairs

Smell alikemoderate

Cooked together2,418 recipes

Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
Rye + flourtop 8% of all pairs

Smell alikestrong

Cooked together1,320 recipes

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

Smell alikemoderate

Cooked together4,373 recipes

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

Smell alikemoderate

Cooked together918 recipes

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

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

What each ingredient does

Rye flour: Provides the dense, dark body and characteristic flavor of the bread.
Cornmeal: Adds coarse texture and structure that keeps the crumb hearty.
Wheat flour: Supplies gluten-forming protein to give the loaf some structure and chew.
Molasses: Adds sweetness, dark color and moisture to the batter.
Baking soda: Reacts with the molasses's acidity to lift and lighten the loaf.
Milk: Hydrates the flours and adds moisture and richness to the batter.

The step that matters

Pour the mixture into a very tight mold. A tightly sealed mold keeps steam trapped during the long boil, so the bread cooks through and stays moist rather than drying out or leaking water into the batter.

“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 →

Wheat Bread65 recipes

Whole Wheat Bread55 recipes

Barley Wheat Bread6 recipes

Cornbread345 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