Name: Washington Pie
Ingredients: 1 cup sugar; 3 eggs; 1½ cups flour; 1 teaspoon baking powder; raspberry jam (for spreading)

Why it works: Sugar and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓

Washington Pie

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 bowl, beat the sugar and eggs together until well combined.
Sift in the flour and baking powder, and mix until smooth.

Bake and assemble

Divide the batter into layers and bake until golden, similar to a jelly cake.
Once cooled, spread raspberry jam between the layers.

Recipe from a historical cookbook (Internet Archive).

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.

Sugar + flourtop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Egg + flourtop 15% of all pairs

Smell alikelow

Cooked together106,462 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + raspberrytop 20% of all pairs

Smell alikemoderate

Cooked together1,262 recipes

Shared aroma: isobutyraldehyde (malty, green).
Sugar + eggtop 21% of all pairs

Smell alikemoderate

Cooked together122,807 recipes

Shared aroma: 2-nonenal (fatty, green).
Sugar + raspberrytop 21% of all pairs

Smell alikelow

Cooked together3,101 recipes

Shared aroma: 2,3-butanedione (butter, sweet).

Egg and flour barely smell alike, yet cooks put them together in 106,462 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: Provide structure and trap air in the batter, helping the cake rise and set.
Flour: Forms the structure that holds the cake's crumb once baked.
Sugar: Sweetens the cake and helps it brown as it bakes.
Baking powder: Releases gas in the batter, making the layers rise and become light.
Raspberry jam: Adds sweetness, fruity flavour and moisture between the layers.