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 ↓
Washington Cake
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Make the batter
In a large bowl, cream together the sugar and butter until light and fluffy.
Add the egg yolks and cream, mixing well.
Gradually stir in the flour and vanilla extract until combined.
Fold in the raisins, currants, and sliced citron.
Bake
Pour the batter into a greased cake pan.
Bake for 1.5 hours or until a toothpick inserted in the center comes out clean.
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).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Raisin + curranttop 10% of all pairsSmell alikelowCooked together6,180 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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 trap air and give the cake a tender, rich crumb.
- Egg yolks
- Add richness and emulsify the batter, helping it bind and set in the oven.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Sugar
- Creams with butter for aeration and adds sweetness and browning.
- Cream
- Adds moisture and fat, producing a softer, more tender crumb.
The step that matters
Baking until fully set. Underbaking leaves the centre wet and sunken because the egg and flour structure has not yet set; a toothpick test confirms it is done.
Swap the currant
How well each one fits the dish's main ingredients (sugar, butter, egg, cream, flour, vanilla, raisin):
- Figfits better
- Coconutfits better
- Blackberryfits better
- Currantthe original
Fit is the average pairing score against sugar, butter, egg, cream, flour, vanilla, raisin. 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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