Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Domestic Fruit Cake
Ingredients
Directions
The book says “a steady oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the apples
Soak the dried apples overnight in cold water.
Chop the apples in the morning and place them in a pot with the molasses.
Stew the mixture until the apples are soft but not pulpy.
Make the batter
Let the mixture cool, then mix in the flour, butter, eggs, baking soda, spices, and salt.
Pour the batter into two loaf pans.
Bake
Bake in a steady oven at 350°F (175°C) until done.
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 + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Molasses + flourtop 16% of all pairsSmell alikemoderateCooked together10,429 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Dried apples
- Provide sweetness, moisture and body once stewed into the batter.
- Molasses
- Adds sweetness, moisture, and dark color and flavor, and softens the crumb.
- All-purpose flour
- Forms the structure that holds the cake together as it sets.
- Eggs
- Bind the batter and help set the crumb during baking.
- Butter
- Adds fat for a tender texture and rich flavor.
- Baking soda
- Reacts with the acidic molasses to produce gas that lifts the batter.
The step that matters
Stewing the apples until soft but not pulpy. Stewing softens the apples and drives off excess water. If they are undercooked, the batter gets chunky and wet; if overcooked into pulp, the cake loses texture and becomes dense and overly moist.
Swap the apple
How well each one fits the dish's main ingredients (molasses, flour, butter, egg):
- Raisinfits better
- Vanillafits better
- Figfits better
- Applethe original
Fit is the average pairing score against molasses, flour, butter, egg. 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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