Name: Chocolate Desert
Ingredients: one cup of sugar; one-half cup of butter; one-half cup of milk; one teaspoon cream of tartar; one-half teaspoon of soda; one-half cups of sifted flour; two squares of scraped chocolate; three tablespoons of boiling water; two eggs; one-fourth cake of baker's chocolate melted; five heaping tablespoons powdered sugar

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 ↓

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.

Butter + milktop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + creamtop 8% of all pairs

Smell alikemoderate

Cooked together41,516 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).
Sugar + creamtop 9% of all pairs

Smell alikemoderate

Cooked together43,450 recipes

Shared aroma: 2,3-butanedione (butter, sweet).
Cream + chocolatetop 11% of all pairs

Smell alikemoderate

Cooked together5,466 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, 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: Add structure to the batter as they set during baking.
Flour: Forms the structure that holds the cake together.
Butter: Adds fat for a tender crumb and richer flavour.
Sugar: Sweetens the cake and helps it brown and stay moist.
Cream of tartar: Acidifies the batter and stabilises its texture for rising with soda.
Soda: Reacts with the acid in the batter to produce gas for rising.

The step that matters

Frosting the cake while it is still hot. Warm cake lets the soft chocolate frosting spread and soak slightly into the surface. If the cake cools first, the frosting may sit unevenly on top rather than setting smoothly.

“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.

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Chocolate	1 oz (28g) semisweet	155
Milk	1 cup (244ml) whole	149
Butter	1 tbsp (14g)	102
Egg	1 large egg (50g)	78
Cream	1 tbsp (15ml) heavy	51
Sugar	1 tbsp (12.5g) granulated	49
Water	not in our table	0
Cake	not in our table	0

Chocolate Desert