Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Self-freezing Ice Cream
Ingredients
Directions
Make the custard
Heat the milk and pour it over the eggs and sugar.
Cook, stirring steadily for 15 minutes, until thickened.
Once cold, add the cream.
Make the custard on Saturday and set it on ice.
Freeze
On Sunday morning, beat in the cream and place in an upright freezer.
Crush a block of ice in a sack or between carpet folds with a hammer.
Layer crushed ice in the freezer, starting with ice.
Layer rock salt over the ice.
Before covering, beat the custard for 5 minutes with a stick or ladle.
Seal tightly.
Pack more ice and salt around it.
Cover with a folded carpet.
After 1.5 hours, wipe off the salt from the top.
Stir the frozen custard with a long knife.
Replace the cover.
Drain excess water.
Pack more ice and salt.
Let it sit for 3 hours or longer.
Check every few hours to drain water.
Add more ice and salt.
Do not open the freezer until ready to serve.
Serve
When ready, wipe off the freezer.
Wrap it with a hot, damp towel.
Invert onto a flat dish.
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.
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Cream + vanillatop 15% of all pairsSmell alikelowCooked together12,301 recipes
Shared aroma: 2-nonanone (fruity, floral).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Cream
- Adds richness and fat, giving the frozen custard a smooth, creamy texture.
- Sugar
- Sweetens the custard and lowers its freezing point, keeping it softer when frozen.
- Eggs (in the method)
- Thicken the custard when cooked and add structure and richness.
- Rock salt (in the method)
- Lowers the temperature of the surrounding ice so the custard freezes.
The step that matters
Cook the custard until thickened. Stirring steadily over heat cooks the egg proteins enough to thicken the custard without scrambling it. Undercooked custard stays thin and freezes unevenly, while overheating can curdle it.
“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
Vanilla Ice Cream108 recipes
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 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.