Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Croquettes of Sweetbreads
Ingredients
Directions
Prepare the sweetbreads
Soak the sweetbreads in cold salted water for 1 hour, removing pipes and membranes.
Boil in salted water with vinegar for 20 minutes, then cool in cold water.
Chop the sweetbreads finely, almost to a paste.
Season with salt, pepper, and grated onion.
Shape the mixture
Add beaten egg yolks, butter, cream, and enough cracker crumbs to form a stiff mixture.
Shape the mixture into small balls or cork shapes.
Coat and fry
Prepare a frying kettle with hot oil, a dish with beaten eggs, and a platter with cracker dust.
Wet your hands with cold water.
Roll the croquettes in cracker dust.
Roll them in beaten egg.
Roll them again in cracker dust.
Fry the croquettes in hot oil until golden brown.
Drain on brown paper.
Serve
Serve hot with sliced lemon or parsley.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Vinegar + oniontop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweetbreads
- Form the main body of the croquettes, giving a soft, finely textured filling.
- Cracker crumbs
- Absorb moisture and bind the mixture so it holds its shape, then form a crisp coating.
- Eggs
- Bind the mixture and create a coating that sets and browns when fried.
- Cream
- Adds moisture and richness, keeping the filling tender rather than dry.
- Butter
- Adds fat for richness and smooth texture in the filling.
The step that matters
Add just enough cracker crumbs to form a stiff mixture. Crumbs absorb liquid from the cream, eggs and chopped sweetbreads. If the mixture stays wet it will not hold its shape and may break apart in the hot oil.
Swap the onion
How well each one fits the dish's main ingredients (veal, vinegar, pepper, egg, butter, cream, lemon):
- Capsicumfits better
- Asparagusfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against veal, vinegar, pepper, egg, butter, cream, lemon. 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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