Why it works: Bread and butter 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 ↓
French Toast
Ingredients
Directions
Prepare
In a bowl, beat together eggs and milk.
Soak slices of bread in the egg mixture.
Cook and serve
Melt butter in a skillet over medium heat.
Fry the soaked bread until golden brown on both sides.
Sprinkle with sugar and cinnamon before serving.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Milk + cinnamontop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Sugar + cinnamontop 10% of all pairsSmell alikelowCooked together30,779 recipes
Shared aroma: guaiacol (smoky, sweet).
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Milk + breadtop 11% of all pairsSmell alikemoderateCooked together11,466 recipes
Shared aroma: 2-undecenal (sweet).
Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 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
- Eggs
- Set during cooking to bind the soaked bread and give it structure.
- Milk
- Adds moisture to the egg mixture so the bread soaks up liquid and stays tender.
- Bread
- Absorbs the egg custard and becomes the body of the dish once fried.
- Butter
- Fat in the skillet that promotes browning and adds flavour to the crust.
- Sugar
- Adds sweetness and helps the surface caramelise slightly for extra colour.
The step that matters
Fry the soaked bread until golden brown on both sides. Heat must be moderate so the outside browns and the egg sets before the centre burns. Too high a heat scorches the surface while the custard inside stays wet and unset.
Swap the cinnamon
How well each one fits the dish's main ingredients (egg, milk, bread, butter, sugar):
- Cinnamonthe original
- Nutmegfits about as well
- Parsleyfits less well
- Capersfits less well
Fit is the average pairing score against egg, milk, bread, butter, sugar. 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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