Why it works: Beetroot and mustard match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 484 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Sandwiches
Ingredients
Directions
Cut the bread into even slices.
Butter one side of each slice.
Layer fish or eggs on the buttered side, then cover with another slice of bread, buttered side down.
For added flavor, add a slice of boiled beetroot on the fish.
Cut the sandwich into quarters and garnish with clean, dry parsley.
For meat sandwiches, spread dripping on the bread, layer on the meat, and add cress salad if desired.
Season meat sandwiches with mustard and salt, and fish or egg sandwiches with pepper and salt.
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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Beetroot + mustardtop 2% of all pairsSmell alikestrongCooked together484 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Beetroot + parsleytop 5% of all pairsSmell alikestrongCooked together745 recipes
Shared aroma: coumarin (sweet, hay).
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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Mustard + parsleytop 8% of all pairsSmell alikestrongCooked together2,588 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the beetroot
The recipe marks beetroot as optional. How well each one fits the dish's main ingredients (bread, butter, fish, beef, mustard, pepper, parsley):
- Shallotfits better
- Potatofits better
- Chivefits better
- Beetrootthe original
Fit is the average pairing score against bread, butter, fish, beef, mustard, pepper, parsley. Candidates are from the same food group and used in at least 100 recipes.
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