Name: Chocolate Caramels
Ingredients: 2 ½ cups sugar; ¾ cup pure corn syrup; ½ cup butter; ⅛ teaspoon cream of tartar; 2 ½ cups whole milk; 2 ½ squares chocolate; 1 teaspoon vanilla extract

Why it works: Milk and vanilla 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 ↓

Chocolate Caramels

Ingredients

Directions

Make the caramel

In a saucepan, combine 2½ cups sugar, ¾ cup pure corn syrup, ½ cup butter, ⅛ teaspoon cream of tartar, and 1 cup whole milk.
Stir constantly over heat until the mixture boils.
Gradually add the remaining 1½ cups whole milk without stopping the boil.
Continue stirring and cook until the mixture reaches 248°F (120°C) or forms a hard ball in cold water.
Remove from heat, add 2½ squares chocolate and 1 teaspoon vanilla extract, and mix thoroughly.

Set and cut

Pour into two buttered pans and let cool slightly before cutting into squares.

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.

Milk + vanillatop 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).
Sugar + syruptop 6% of all pairs

Smell alikestrong

Cooked together5,842 recipes

Shared aroma: ethanol (alcoholic, ethereal).
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).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sugar: Forms the caramel base and provides sweetness and browning as it cooks.
Pure corn syrup: Prevents sugar crystals from forming, keeping the caramel smooth and chewy.
Butter: Adds fat for a soft, rich texture and a buttery flavor.
Whole milk: Adds moisture and milk solids that give the caramel its creamy body and color.
Chocolate: Adds chocolate flavor and richness to the caramel.

The step that matters

Cook to 248°F (120°C). Stopping at the right temperature controls the firmness of the set caramel. Cooking too little leaves it soft and sticky, while cooking too far makes it hard. Stir constantly so the milk solids don't scorch on the bottom of the pan.

“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.