Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Vassar Fudge
Ingredients
Directions
Make the fudge
In a saucepan, combine the sugar and cream.
Heat until hot, then add the chocolate broken into fine pieces.
Stir vigorously and constantly.
When it begins to boil, add the butter.
Continue stirring until it creams when beaten on a saucer.
Remove from heat and beat until quite cool.
Set and cut
Pour into buttered tins.
Once cold, cut into diamond-shaped pieces.
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 + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Cream + chocolatetop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Butter + chocolatetop 16% of all pairsSmell alikemoderateCooked together10,543 recipes
Shared aroma: delta-decalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White sugar
- Provides sweetness and, dissolved and cooked, forms the fudge's crystal structure.
- Cream
- Adds fat and moisture, giving the fudge a smooth, rich texture.
- Chocolate
- Supplies the chocolate flavour and fat that firm the fudge as it cools.
- Butter
- Adds richness and smoothness to the finished fudge.
The step that matters
Beating until creamy. Beating the hot mixture as it cools encourages fine sugar crystals to form, giving a smooth, creamy texture. Pouring or cutting too early, before it has cooled and set, leaves the fudge soft and runny.
“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.
More chocolate fudge recipes
You might also like
The 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.

Chocolate Cream171 recipes
Chocolate Cookies76 recipes
Chocolate Drop Cookies50 recipes
Chocolate Cake32 recipes