Name: Tea Cake
Ingredients: 1 cup sour milk; 1 cup raisins; 1 cup sugar; 1 egg; 1 teaspoon baking soda; 2 ½ cups all-purpose flour; dark spices to taste

Why it works: Raisin and flour 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 ↓

Tea 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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Make the batter

Preheat your oven to 350°F (175°C).
In a large bowl, combine sour milk, raisins, sugar, and egg. Mix in baking soda and dark spices.
Gradually add flour, stirring until well combined.
Pour the batter into a greased cake pan.

Bake

Bake for 30-40 minutes or until a toothpick comes out clean.

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.

Raisin + flourtop 1% of all pairs

Smell alikestrong

Cooked together9,075 recipes

Shared aroma: isobutyraldehyde (malty, green).
Raisin + sugartop 13% of all pairs

Smell alikemoderate

Cooked together12,481 recipes

Shared aroma: beta-damascenone (apple, rose).
Milk + flourtop 14% of all pairs

Smell alikelow

Cooked together78,219 recipes

Shared aroma: isobutyraldehyde (malty, green).
Milk + raisintop 15% of all pairs

Smell alikemoderate

Cooked together7,155 recipes

Shared aroma: decanoic acid (acides aroma).
Sugar + flourtop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).

Milk and flour barely smell alike, yet cooks put them together in 78,219 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

Sour milk: Provides acidity that reacts with baking soda to help the cake rise and stay tender.
Baking soda: Reacts with the acid in sour milk to produce gas, lifting the batter as it bakes.
All-purpose flour: Forms the structure of the cake as its proteins set during baking.
Egg: Binds the batter and adds structure and moisture as it sets.
Sugar: Sweetens the cake and helps it brown and keep moisture.