Why it works: Biscuit and mustard match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 121 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Deviled Biscuits
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Split the stale rolls or biscuits and toast them to a light brown in a 400°F (200°C) oven.
Make the topping
In a bowl, mix the grated cheese, salad oil, mustard, salt, cayenne, and beaten egg yolks until smooth.
Spread the mixture on the inside of the toasted biscuits.
Bake and serve
Place the biscuits back in the oven to heat through and serve covered with a napkin.
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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Biscuit + mustardtop 4% of all pairsSmell alikestrongCooked together121 recipes
Shared aroma: coumarin (sweet, hay).
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Cheese + mustardtop 11% of all pairsSmell alikemoderateCooked together1,805 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Biscuit + cheesetop 16% of all pairsSmell alikemoderateCooked together252 recipes
Shared aroma: nonanal (fat, citrus).
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Biscuit + eggtop 27% of all pairsSmell alikemoderateCooked together1,643 recipes
Shared aroma: nonanal (fat, citrus).
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Cheese + eggtop 28% of all pairsSmell alikemoderateCooked together6,253 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Stale rolls or biscuits
- Provide the base that toasting firms into a crisp, sturdy support for the topping.
- Dry cheese
- Adds savoury flavour and, as it heats, a browned, slightly crisp surface.
- Egg yolks
- Bind the mixture and give it a smooth, rich, custard-like texture when heated.
- Salad oil
- Adds fat that keeps the topping smooth and helps it spread and brown.
The step that matters
Toasting the biscuits to light brown. Toasting dries the bread so it stays crisp under the moist, egg-rich topping. Under-toasted bread softens and turns soggy, while over-toasting makes it brittle and dark.
Swap the mustard
How well each one fits the dish's main ingredients (biscuit, cheese, egg):
- Mustardthe original
- Welsh onionfits about as well
- Asparagusfits about as well
- Spinachfits less well
Fit is the average pairing score against biscuit, cheese, egg. 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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