Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Cheese Au Gratin
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Butter small baking dishes.
Make the custard
Beat the egg whites until stiff, then mix in the yolks, salt, and cayenne.
Add the grated cheese and milk to the egg mixture and combine well.
Pour the mixture into the prepared dishes and sprinkle with bread crumbs.
Bake and serve
Bake for 8 minutes until golden. Serve warm.
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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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Cheese + breadtop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cheese + milktop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whipped whites add lift and structure, and the yolks set to give the dish a custard-like body.
- Grated cheese
- Provides rich flavour and fat, and helps the top turn golden and savoury as it bakes.
- Milk
- Adds moisture to the egg mixture so it bakes tender rather than dry.
- Bread crumbs
- Form a crisp, browned topping over the surface of the dish.
- Butter
- Greases the dishes so the baked gratin releases cleanly and browns at the edges.
The step that matters
Beat the egg whites until stiff, then mix in the yolks, salt, and cayenne.. Stiff whites trap air that gives the mixture lift. Folding gently rather than stirring hard keeps that air from deflating before the dish goes into the oven.
“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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