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 Cookies
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).
Make the batter
Cream the butter and sugar together until smooth.
Beat in the eggs until well combined.
Dissolve the baking soda in the hot water.
Mix the salt with ½ cup of the flour and the cinnamon.
Add the nuts and dried fruit to the flour mixture.
Combine the flour mixture with the creamed mixture and the remaining flour.
Spread the batter in a thin layer on a baking sheet.
Bake and serve
Bake until golden, then cool and cut into squares.
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.
Photo for illustrative purposes only · Contact us to use it
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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Raisin + cinnamontop 1% of all pairsSmell alikemoderateCooked together5,390 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Walnut + cinnamontop 6% of all pairsSmell alikestrongCooked together2,147 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Flour + cinnamontop 9% of all pairsSmell alikemoderateCooked together17,341 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + cinnamontop 10% of all pairsSmell alikelowCooked together30,779 recipes
Shared aroma: guaiacol (smoky, sweet).
Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 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
- Butter
- Creams with sugar to add richness and a tender, crumbly texture.
- Flour
- Provides the structure that holds the cookie together as it bakes.
- Sugar
- Sweetens the dough and helps it brown during baking.
- Eggs
- Bind the dough and add structure and moisture.
- Baking soda
- Reacts with the dough to help it rise and brown.
- Walnuts
- Add crunch and a toasty, nutty flavor.
The step that matters
Dissolve the baking soda in the hot water. Baking soda must be fully dissolved so it distributes evenly through the batter. Unevenly mixed leavener can leave pockets that rise unevenly or taste bitter.
Swap the currant
How well each one fits the dish's main ingredients (butter, flour, sugar, walnut, raisin, egg, cinnamon):
- Vanillafits better
- Figfits better
- Coconutfits better
- Currantthe original
Fit is the average pairing score against butter, flour, sugar, walnut, raisin, egg, cinnamon. 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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