Why it works: Sugar and milk are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 77,875 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Plain Fudge
Ingredients
Directions
Prepare
Dissolve the brown sugar in the milk.
Add the baking soda to prevent curdling.
Cook
Cook in a porcelain-lined saucepan until a bit dropped in cold water hardens to a brittle mass.
Pour and cut
Pour into a buttered pan with straight sides.
As it cools, cut into small squares with a wet knife.
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.
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and milk barely smell alike, yet cooks put them together in 77,875 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
- Brown sugar
- Provides most of the sweetness and the caramel flavor, and sets the fudge's texture as it crystallizes.
- Milk
- Adds moisture and dairy fat, giving the fudge a creamy, tender body.
- Baking soda
- Raises the mixture's pH so the milk is less likely to curdle while it cooks.
The step that matters
Cooking to the cold-water test. The final texture depends on how far the sugar syrup is concentrated. Stopping early leaves fudge soft and runny, while going too far makes it hard and grainy. Checking a dropped sample in cold water shows when the sugar has reached the right concentration.
“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.
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