Name: Cold Fudge
Ingredients: 1 lb pulverized sugar; 1 egg; ½ cake chocolate; 1 teaspoon vanilla; milk (as needed); butter (for greasing tins)

Why it works: Vanilla and milk are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Cold Fudge

Ingredients

Directions

Combine the pulverized sugar, egg, chocolate, and vanilla in a bowl.
Mix in milk until the mixture is thin.
Beat the mixture until it becomes stiff.
Pour the mixture into buttered tins.

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.

Vanilla + milktop 5% of all pairs

Smell alikemoderate

Cooked together19,187 recipes

Shared aroma: ethyl caproate (fruity, apple peel).
Chocolate + vanillatop 5% of all pairs

Smell alikemoderate

Cooked together10,020 recipes

Shared aroma: sotolon (curry, maple).
Milk + buttertop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

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

Smell alikelow

Cooked together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Sugar + chocolatetop 13% of all pairs

Smell alikemoderate

Cooked together15,404 recipes

Shared aroma: guaiacol (smoky, sweet).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Pulverized sugar: Provides sweetness and bulk, forming the body of the fudge.
Egg: Adds binding and richness to hold the mixture together.
Chocolate: Supplies the main flavour and deep colour of the fudge.

“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.