Name: Chocolate Cookies
Ingredients: 1 cup butter; 1 ½ cups brown sugar; 2 eggs; 2 tablespoons sweet milk; ½ teaspoon baking soda; 1 ½ squares chocolate; Flour (for rolling); Sugar (for sprinkling)

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 ↓

Chocolate Cookies

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Make the dough

Cream the butter and brown sugar together.
Add the eggs and sweet milk, mixing well.
Melt the chocolate and stir it into the mixture.
Add the baking soda and enough flour to make a soft dough.

Shape and bake

Roll out the dough and sprinkle with sugar.
Bake in a 400°F (200°C) oven until done.

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.

Photo for illustrative purposes only · Contact us to use it

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 + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Sugar + chocolatetop 13% of all pairs

Smell alikemoderate

Cooked together15,404 recipes

Shared aroma: guaiacol (smoky, sweet).
Milk + chocolatetop 13% of all pairs

Smell alikemoderate

Cooked together9,128 recipes

Shared aroma: gamma-nonanolactone (coconut, sweet).
Milk + flourtop 14% of all pairs

Smell alikelow

Cooked together78,219 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

Butter: Adds richness and tenderness, and helps create a crisp-edged, soft-centred texture.
Brown sugar: Adds sweetness and moisture, and helps the cookies brown and stay soft.
Eggs: Bind the dough and add structure and richness to the cookies.
Baking soda: Reacts to lift and leaven the dough so the cookies spread and rise.
Chocolate: Provides the chocolate flavour and a rich, fudgy character.

“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.