Why it works: Onion and flour are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 32,460 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Onions Stewed in Gravy
Ingredients
Directions
Prepare
Peel and prepare the onions.
Lightly dust the onions with flour.
Fry and stew
Fry the onions in a pan until they are a pale brown, about 15 to 20 minutes.
Add the broth or gravy to the pan.
Simmer the onions in the gravy for nearly 2 hours, turning them occasionally.
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 + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Form the body of the dish and turn sweet and soft as they cook slowly.
- Broth or gravy
- Provides the liquid that moistens the onions and forms the sauce.
- Flour
- Helps the onions brown during frying and lightly thickens the gravy.
The step that matters
Frying to a pale brown. Browning through the Maillard reaction builds savory flavor in the onions. Frying too hot or too long can scorch the sugars, which turns them bitter, so stop at pale brown before the gravy is added.
“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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