Name: Best Chocolate Chip Cookies
Ingredients: 1 ½ cups all-purpose flour; ½ t. baking soda; ½ t. salt; ¼ pound (1 stick) unsalted butter, melted; ½ cup sugar (I use vanilla sugar, made by storing used vanilla bean pods in the sugar jar); ¾ cup tightly packed dark brown sugar; 1 t. vanilla extract; 1/2 vanilla bean (split the bean lengthwise with a paring knife, scrape the seeds out of one half, & save the other half for a future batch); 1 large egg, at room temperature; 7 oz bittersweet chocolate chips

Why it works: Vanilla and chocolate are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. 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.

Vanilla + chocolatetop 5% of all pairs

Smell alikemoderate

Cooked together10,020 recipes

Shared aroma: sotolon (curry, maple).
Sugar + vanillatop 8% of all pairs

Smell alikelow

Cooked together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Flour + buttertop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + vanillatop 12% of all pairs

Smell alikemoderate

Cooked together19,241 recipes

Shared aroma: isobutyraldehyde (malty, green).
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

Butter: Adds richness and tenderness, and helps the cookies spread and brown.
Brown sugar: Adds moisture and molasses flavor, keeping the cookies chewy and soft.
All-purpose flour: Provides the structure that holds the cookies together as they bake.
Egg: Binds the dough and adds structure and moisture to the cookies.
Baking soda: Reacts to lift and spread the dough, giving a tender crumb and browning.
Chocolate chips: Add pockets of melted chocolate flavor and contrast to the soft crumb.

The step that matters

Bake only until golden at the edges. Cookies keep baking from residual heat after leaving the oven, so overbaking dries them out and makes them firm rather than soft and chewy.

“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
Butter	1 tbsp (14g)	102
Egg	1 large egg (50g)	78
Sugar	1 tbsp (12.5g) granulated	49
Vanilla	1 tsp extract (4ml)	12
Salt	1 tsp (6g)	0
Bean	not in our table	0
Seed	not in our table	0

Best Chocolate Chip Cookies