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
Dissolve the baking soda in a small amount of boiling water and add it to the molasses.
In a large bowl, mix all ingredients together and beat until smooth.
Pour the mixture into a greased mold.
Steam
Steam for three hours.
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.
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Flour + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Buttermilk + flourtop 8% of all pairsSmell alikemoderateCooked together3,721 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Buttermilk + molassestop 11% of all pairsSmell alikemoderateCooked together526 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Molasses + raisintop 12% of all pairsSmell alikelowCooked together3,577 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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
- Baking soda
- Reacts with the acidic buttermilk and molasses to produce gas that lightens the bread.
- Buttermilk
- Provides acidity that activates the baking soda and adds moisture and tenderness.
- Molasses
- Adds sweetness, dark color and moisture, and its acidity helps the baking soda react.
- Eggs
- Bind the batter and add structure as the bread sets.
- Brown flour
- Provides the main structure of the bread.
- Cornmeal
- Adds a coarser texture and body to the crumb.
The step that matters
Dissolving the baking soda in boiling water before adding it to the molasses. Baking soda needs an acid to release carbon dioxide. Dissolving it evenly in the molasses first spreads it through the batter so the bread rises uniformly rather than in patches.
“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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