Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Washington Lemon 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.
Make the cake batter
Preheat the oven to 350°F (175°C).
In a bowl, cream together the butter and sugar.
Add the eggs and milk, mixing well.
Gradually stir in the flour and baking powder until smooth.
Divide the batter evenly among four round cake tins.
Bake and fill
Bake until golden and a toothpick comes out clean.
For the filling, combine the grated lemon rind, pulp, juice, sugar, water, and beaten eggs in a saucepan.
Simmer until it thickens to a jelly consistency.
Let the filling cool before spreading it between the cake layers.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
Butter and flour 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
- Eggs
- Bind the batter and set the lemon filling as it cooks.
- Butter
- Adds fat and richness, tenderising the crumb.
- Flour
- Forms the structure of the cake as it bakes.
- Baking powder
- Releases gas that makes the cake rise.
- Sugar
- Sweetens the cake and helps it brown and stay moist.
- Lemon juice
- Adds acidity and bright lemon flavour to the filling.
The step that matters
Simmering the lemon filling. The eggs can scramble if the filling boils hard, and it only thickens to a jelly as the egg proteins set gently over heat. Stir steadily and keep the heat moderate.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, butter, milk, flour):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against egg, sugar, butter, milk, flour. 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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