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 ↓
Bran Bread
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Pour boiling water over the raisins and let them stand for 10 minutes, then drain and cut in halves.
Save 1 cup of flour to mix with the raisins.
Make the batter
Dissolve the baking soda in a little hot water and add it to the sour milk, stirring well.
Add the brown sugar and salt, then gradually mix in the bran flour and whole wheat flour.
Beat the mixture thoroughly until well combined.
Fold in the raisins mixed with the reserved flour.
Bake
Pour the batter into a greased 5x9-inch loaf pan.
Bake for 1 hour until golden brown.
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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Milk + wheattop 6% of all pairsSmell alikemoderateCooked together2,418 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Flour + wheattop 12% of all pairsSmell alikemoderateCooked together4,373 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + raisintop 13% of all pairsSmell alikemoderateCooked together12,481 recipes
Shared aroma: beta-damascenone (apple, rose).
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Wheat + raisintop 14% of all pairsSmell alikemoderateCooked together163 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sour milk
- Provides moisture and acidity that reacts with the baking soda to help the loaf rise.
- Baking soda
- Reacts with the acid in the sour milk to produce gas that lifts the loaf.
- Bran flour
- Gives the loaf its structure and a dense, hearty texture.
- Whole wheat flour
- Adds structure and a nutty, earthy flavour with a denser crumb.
- Brown sugar
- Adds sweetness, moisture and helps the crust turn golden brown.
- Raisins
- Add sweetness and chewy, moist pockets throughout the loaf.
The step that matters
Dissolve the baking soda in hot water and stir it well into the sour milk. Baking soda needs an acid to activate it. If it is not fully dissolved and evenly distributed through the sour milk, it creates gas unevenly, leaving pockets of dense batter and an uneven rise.
Swap the raisin
How well each one fits the dish's main ingredients (milk, sugar, flour, wheat):
- Vanillafits about as well
- Raisinthe original
- Figfits less well
- Blueberryfits less well
Fit is the average pairing score against milk, sugar, flour, wheat. Candidates are from the same food group and used in at least 100 recipes.
“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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