Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 27,232 recipes mention both. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Eggs Au Gratin
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the eggs
Shell and slice the hard-boiled eggs.
Arrange the slices in a deep dish in close circular rows.
Make the sauce
In a saucepan, melt the butter over low heat.
Add the egg yolks, grated cheese, and milk, stirring until the sauce thickens.
Assemble and bake
Pour the sauce over the arranged eggs.
Sprinkle bread crumbs on top.
Bake in a preheated oven at 400°F (200°C) for 10 minutes.
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 aroma chemistry they share, and how many recipes mention both.
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Butter + breadtop 7% of all pairsAroma overlapmoderateMentioned together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + milktop 7% of all pairsAroma overlapmoderateMentioned together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Cheese + breadtop 7% of all pairsAroma overlapmoderateMentioned together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + cheesetop 8% of all pairsAroma overlapmoderateMentioned together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cheese + milktop 10% of all pairsAroma overlapmoderateMentioned 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
- Hard-boiled eggs
- Form the main body of the dish, providing substance and a firm texture when baked.
- Egg yolks
- Enrich the sauce and help it thicken into a smooth, creamy custard as it heats.
- Grated cheese
- Adds savoury flavour and helps the sauce brown under the crumbs.
- Milk
- Forms the liquid base of the sauce, giving it moisture and a soft, pourable body.
- Butter
- Adds richness and fat to the sauce, carrying flavour and smoothing its texture.
- Bread crumbs
- Form a crisp, golden topping that browns in the oven.
The step that matters
Stirring the sauce until it thickens. Egg yolks set when heated, so the sauce must be cooked gently over low heat and stirred constantly. Too much heat can curdle the yolks and leave the sauce grainy instead of smooth.
“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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