Name: Wacky Cake
Ingredients: 3 cups sifted flour; 1½ cups white granulated sugar; 1 cup cocoa powder; 2 tsp baking soda; 1 tsp salt; 2 cups water; ¾ cups vegetable oil; 2 tbsp vinegar; 2 tsp vanilla

Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and 35,032 recipes mention both. Both carry beta-damascenone, which smells apple, rose. The science ↓

Wacky Cake

Oven180°C or 350°F

Time35–40 minutes

Ingredients

Directions

Make the batter

Combine flour, sugar, cocoa, and baking soda in a large bowl.
Add water, oil, vinegar and vanilla. Blend thoroughly.

Bake and cool

Pour into a greased square cake pan.
Bake at 180°C or 350°F for 35–40 minutes.
Cool completely.

Recipe from the Wikibooks Cookbook.

Steps grouped into stages for easier reading; the method is the source's own.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.

Sugar + vanillatop 8% of all pairs

Aroma overlaplow

Mentioned together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Cocoa powder + vanillatop 10% of all pairs

Aroma overlapmoderate

Mentioned together2,189 recipes

Shared aroma: sotolon (curry, maple).
Flour + vanillatop 12% of all pairs

Aroma overlapmoderate

Mentioned together19,241 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + cocoa powdertop 13% of all pairs

Aroma overlapmoderate

Mentioned together2,244 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Sugar + cocoa powdertop 14% of all pairs

Aroma overlapmoderate

Mentioned together2,920 recipes

Shared aroma: guaiacol (smoky, sweet).

Sugar and vanilla share little aroma chemistry, yet 35,032 recipes mention both: they likely 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

Baking soda: Reacts with the vinegar to produce gas that lifts the batter as it bakes.
Vinegar: Reacts with the baking soda to create rising, and adds a slight tang.
Vegetable oil: Adds moisture and tenderness to the crumb.
Flour: Provides structure as the batter sets in the oven.
Cocoa powder: Supplies chocolate flavour and dark colour.

“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.