Why it works: Onion and sugar are a kitchen classic. They rank in the top 36% of all ingredient pairs, and cooks put them together in 15,747 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Onions, Boiled
Ingredients
Directions
Prepare
Peel and cut onions twice across at the root end.
Pour boiling water over them in a basin, cover, and strain after a few minutes.
Cook
Put onions in a pot with plenty of boiling water, salt, and sugar.
Cook until tender, changing the water halfway if a milder flavor is desired.
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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Onion + sugartop 36% of all pairsSmell alikelowCooked together15,747 recipes
Shared aroma: guaiacol (smoky, sweet).
Onion and sugar barely smell alike, yet cooks put them together in 15,747 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
- Onions
- Main vegetable; heat softens its firm structure and mellows its sharp flavor.
The step that matters
Cook until tender. Heat softens the onion's cell walls gradually. Stopping too early leaves the onions firm and sharp, while cooking too long makes them mushy and bland.
“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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