Why it works: Milk and sugar 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 ↓
Condensed Milk
Ingredients
Directions
The book gives no oven temperature. The 150°F in the steps was added when the recipe was transcribed, as a starting point.
Prepare the milk
Strain the milk.
Heat the milk in a water bath to 150°F (65.5°C) to 175°F (79.4°C).
Pass the milk through strainers.
Make the condensed milk
Transfer the milk to a vat with steam pipes and bring it to a boil.
Add ⅓ cup of sugar for every quart of milk during boiling.
Evaporate the milk for about three hours.
Cool and seal
Cool the condensed milk to 70°F (21°C) and weigh it into tins.
Seal the tins by soldering them down.
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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Milk + sugartop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Milk and sugar 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
- Milk
- Provides the water, milk solids and proteins that evaporate down into a thick, creamy body.
- Refined sugar
- Adds sweetness and, with evaporation, helps preserve the finished condensed milk.
The step that matters
Evaporate the milk for about three hours. Milk must be boiled down gradually while the sugar dissolves. Too little evaporation leaves it thin and unstable, and overheating can scorch the milk sugars and proteins, causing a dark, burnt flavour.
“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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