Why it works: Onion and mustard 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 ↓
Fried Tongue
Ingredients
Directions
Fry the tongue
Slice the cold boiled tongue.
Fry the slices quickly in dripping or butter.
Chop the onion finely.
Stir the chopped onion in before frying the tongue.
Make the sauce
Arrange the fried slices neatly in a hot-water dish, overlapping each other.
Strain the fat and return it to the fire.
Stir in the browned flour, Worcestershire sauce, vinegar, mustard, cayenne, and boiling water.
Stir and boil for one minute.
Serve
Pour the sauce over the tongue.
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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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sauce + mustardtop 13% of all pairsSmell alikemoderateCooked together2,120 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Cold boiled tongue
- Provides the meat, which browns on the surface when fried quickly.
- Dripping or butter
- Fat for frying that browns the slices and carries flavour into the sauce.
- Onion
- Adds aromatic, savoury flavour as it cooks in the fat.
- Browned flour
- Thickens the sauce and adds a toasted, nutty colour and flavour.
- Vinegar
- Adds sharp acidity that balances the richness of the fat and meat.
- Worcestershire sauce
- Adds savoury, tangy depth to the sauce.
The step that matters
Fry the slices quickly. Brief, high heat browns the outside of the tongue while keeping the meat moist inside. Longer frying toughens and dries the slices, so they should be cooked only until browned.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, sauce, vinegar, mustard):
- Shallotfits better
- Horseradishfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against butter, flour, sauce, vinegar, mustard. 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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