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
Ingredients
Directions
Make the dough
Melt the chocolate and butter together.
Add the sugar, beaten eggs, and milk with dissolved baking soda.
Mix in enough flour to roll out the dough thin.
Shape and frost
Cut into small cookies.
Frost the cookies with icing made from confectioners' sugar.
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 pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Chocolate + sugartop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Chocolate + milktop 13% of all pairsSmell alikemoderateCooked together9,128 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
-
Flour + milktop 14% of all pairsSmell alikelowCooked 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
- Flour
- Builds the structure that holds the cookies together as the starch sets when baked.
- Eggs
- Add structure and binding, helping the dough hold together and set.
- Baking soda
- Reacts with the dough to release gas, helping the cookies rise and spread.
- Butter
- Adds fat for richness, tenderness, and a softer crumb.
- Sugar
- Adds sweetness and helps the cookies brown and stay tender.
- Chocolate
- Provides the main chocolate flavour and some fat for richness.
The step that matters
Mix in enough flour to roll out the dough thin. Flour sets the cookie's structure, so the amount matters. Too little leaves the dough sticky and hard to roll, while too much makes the cookies dry and tough.
“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.
You might also like
Chocolate Cream171 recipes
Chocolate Fudge55 recipes
Chocolate Drop Cookies50 recipes
Chocolate Cake32 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.