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 ↓
Solidified Milk
Ingredients
Directions
Prepare
Combine milk, sugar, and bicarbonate of soda in a large container.
Pour the mixture into enameled iron evaporating vessels.
Evaporate
Place the vessels in warm water heated by steam.
Use a thermometer to regulate the water temperature.
Create a current of air between the covers and the milk.
Gently agitate the milk while evaporating to avoid churning.
Continue until the mixture reduces to a creamy powder.
Package
Cool the powder in the air, then weigh it into 1-pound parcels.
Press each parcel into a compact tablet shape and cover with tin foil.
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 solids and water that evaporate down to become the powder.
- White sugar
- Adds sweetness and helps the powder stay dry and stable once concentrated.
- Bicarbonate of soda
- Neutralises acidity in the milk, which helps keep it from curdling during heating.
The step that matters
Gently agitate the milk while evaporating to avoid churning. Milk can scorch on the hot vessel surface and form a crust if not kept moving, while vigorous churning incorporates air and can cause unwanted textures. Gentle stirring keeps the heat even and the powder smooth.
“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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