Name: Sponge Drop Cakes
Ingredients: 2 cups sugar; 2 cups flour; ½ cup cold water; 1 teaspoon cream of tartar; 1 teaspoon baking soda (or 2 teaspoons baking powder); 1 teaspoon lemon extract

Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

Sponge Drop Cakes

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

Preheat your oven to 400°F (200°C).

Make and bake

In a large bowl, combine sugar, flour, cold water, cream of tartar, baking soda, and lemon extract, and mix until well combined.
Pour the batter into muffin pans or cups.
Bake in the preheated oven until golden brown.

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 + creamtop 9% of all pairs

Smell alikemoderate

Cooked together43,450 recipes

Shared aroma: 2,3-butanedione (butter, sweet).
Sugar + flourtop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour + lemontop 17% of all pairs

Smell alikemoderate

Cooked together30,404 recipes

Shared aroma: isobutyraldehyde (malty, green).
Sugar + lemontop 18% of all pairs

Smell alikelow

Cooked together53,532 recipes

Shared aroma: 2-nonenal (fatty, green).
Flour + creamtop 20% of all pairs

Smell alikemoderate

Cooked together30,481 recipes

Shared aroma: acetaldehyde (pungent, ethereal).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Flour: Provides the structure that holds the cake's airy crumb together as it bakes.
Sugar: Adds sweetness and helps the cake brown as it bakes.
Cream of tartar: Acidifies the batter, stabilising the foam and helping it rise evenly.
Baking soda: Reacts with the acid in the batter to produce gas that makes the cake rise.