Why it works: Rye and flour match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 1,320 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Steamed Boston Brown Bread
Ingredients
Directions
Make the batter
In a bowl, combine rye flour, cornmeal, molasses (or sugar), and salt.
Mix thoroughly and add sour milk until well combined.
Dissolve baking soda in water and add to the mixture.
Steam and serve
Pour the batter into a greased steaming mold.
Steam for about 2 hours until cooked through.
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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Rye + flourtop 8% of all pairsSmell alikestrongCooked together1,320 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Rye + milktop 12% of all pairsSmell alikemoderateCooked together918 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + molassestop 16% of all pairsSmell alikemoderateCooked together10,429 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Rye + molassestop 16% of all pairsSmell alikelowCooked together804 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Rye flour
- Provides the dark, dense structure and earthy flavor typical of this bread.
- Cornmeal
- Adds a coarse, crumbly texture and body to the batter.
- Molasses
- Adds sweetness, moisture, and a deep brown color to the bread.
- Sour milk
- Its acidity reacts with the baking soda so the bread rises and softens.
- Baking soda
- Reacts with the acidic sour milk to produce gas that lifts the batter.
The step that matters
Dissolving and adding the baking soda. Baking soda must be fully dissolved and mixed in evenly so it reacts with the sour milk throughout the batter. Uneven mixing leaves dense pockets or patches that fail to rise.
“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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