Why it works: Mustard and pepper are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 15,430 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cheese, Toasted, or Scotch Rare-bit
Ingredients
Directions
Prepare
Cut the cheese into thin slices.
Make the toasted cheese
Melt the cheese in a cheese toaster on a hot plate or over steam.
Add mustard and pepper to the melted cheese and stir until dissolved.
Brown the cheese before the fire or with a salamander.
Serve
Fill the cheese toaster with hot water and serve with dry or buttered toast.
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.
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cheese + mustardtop 11% of all pairsSmell alikemoderateCooked together1,805 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cheese + peppertop 18% of all pairsSmell alikemoderateCooked together7,861 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Slices of rich cheese
- Melts into a smooth, rich layer that forms the body of the dish.
- Toast
- Provides a crisp base that holds the melted cheese.
- Mustard
- Adds sharp, pungent flavour that cuts through the richness of the cheese.
The step that matters
Melt the cheese gently. Cheese turns grainy and oily when overheated, because its proteins tighten and fat separates. Gentle heat over a hot plate or steam keeps it smooth and stretchy.
Swap the mustard
How well each one fits the dish's main ingredients (cheese, pepper):
- Capsicumfits better
- Mustardthe original
- Tomatofits about as well
- Spinachfits less well
Fit is the average pairing score against cheese, pepper. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Macaroni and Cheese102 recipes
Cheese Making50 recipes
Cheese Fritters34 recipes
Cheese Omelette31 recipes