Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Ham and Tongue Sandwiches
Ingredients
Directions
Make the sauce
In a saucepan, melt the butter.
Mix the ground mustard and coarse sea salt with enough cold water to form a stiff paste; add to the melted butter.
Stir in the olive oil, egg yolk, onion juice, and Tabasco sauce.
Prepare the filling
Mince the cold boiled ham and tongue together with the chopped onion pickle.
Combine the meat mixture with the butter mixture and add a few drops of lemon juice.
Assemble
Spread the mixture on thin slices of bread, placing a lettuce leaf on either side.
Press the bread together firmly.
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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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Olive + lemontop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Olive + oniontop 8% of all pairsSmell alikemoderateCooked together29,779 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Melted fat that carries the mustard and egg yolk, giving the filling richness and a smooth body.
- Egg yolk
- Emulsifies the olive oil and butter, helping the sauce hold together and turn creamy.
- Ham
- Provides the savory, salty meat flavor that forms the body of the filling.
- Tongue
- Adds tender, rich meat texture and depth to the filling.
- Chopped onion pickle
- Adds sharp acidity and crunch that cut through the rich butter and meat.
The step that matters
Combine the meat mixture with the butter mixture and add a few drops of lemon juice.. The emulsion of butter, oil and egg yolk can split if combined too quickly or when too warm. Adding the minced meat and lemon juice gradually keeps the filling smooth and evenly seasoned.
Swap the lemon
How well each one fits the dish's main ingredients (butter, mustard, olive, egg, onion, sauce, ham):
- Avocadofits better
- Coconutfits about as well
- Lemonthe original
- Pumpkinfits about as well
Fit is the average pairing score against butter, mustard, olive, egg, onion, sauce, ham. 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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