Why it works: Butter and sauce are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 15,338 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Scalloped Onions
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Prepare and cook the onions as you would for boiled onions.
Cut the cooked onions into pieces and place them in a buttered baking dish.
Assemble and bake
Add the cracker crumbs and bits of butter on top.
Cover with White Sauce.
Bake in a 350°F (175°C) oven until brown.
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.
Photo for illustrative purposes only · Contact us to use it
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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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Onion + saucetop 19% of all pairsSmell alikelowCooked together10,474 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Butter and sauce barely smell alike, yet cooks put them together in 15,338 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
- Form the main body of the dish and soften into a tender, sweet filling.
- Butter
- Adds richness and helps the top crumbs brown in the oven.
- Cracker crumbs
- Form a crisp topping that browns and adds texture over the onions.
- White sauce
- Adds moisture and creaminess that binds the onions together.
The step that matters
Baking until brown. The top must brown fully for a crisp crust, but the sauce should stay moist and bubbling. Watching the color, rather than only the clock, keeps the topping from scorching while the centre heats through.
Swap the onion
How well each one fits the dish's main ingredients (butter, sauce):
- Shallotfits better
- Mustardfits about as well
- Onionthe original
- Tomatofits about as well
Fit is the average pairing score against butter, sauce. Candidates are from the same food group and used in at least 100 recipes.
“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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