Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Croquettes of Sweetbreads
Ingredients
Directions
Prepare the sweetbreads
Soak sweetbreads in cold salted water for 1 hour, removing pipes and membranes.
Boil sweetbreads in salted water with vinegar for 20 minutes, then cool in cold water.
Chop sweetbreads finely, almost to a paste.
Make the mixture
Season the chopped sweetbreads with salt, pepper, and grated onion.
Add beaten egg yolks, butter, cream, and enough cracker crumbs to form a stiff mixture.
Wet hands with cold water and shape the mixture into small balls or cork shapes.
Coat and fry
Roll the croquettes in cracker crumbs.
Dip the croquettes in beaten eggs.
Roll the croquettes again in cracker crumbs.
Heat oil in a frying kettle.
Carefully drop the croquettes into the hot oil.
Fry until golden brown.
Drain the croquettes on brown paper to remove excess grease.
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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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).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweetbreads
- Provide the main body of the filling, chopped fine so it binds into a smooth, tender mixture.
- Eggs
- Bind the mixture and form a coating that sets and browns during frying.
- Cracker crumbs
- Absorb moisture and give the shaped croquettes a firm structure and crisp outer crust.
- Cream
- Adds moisture and richness, keeping the filling soft inside the crust.
- Butter
- Adds fat and flavour, enriching the filling's texture.
The step that matters
Frying the croquettes. The coated croquettes need hot oil and should be fried until golden brown. Oil that is too cool lets the coating soak up grease and can loosen the filling, so they stay soft and oily instead of crisp.
Swap the onion
How well each one fits the dish's main ingredients (veal, vinegar, pepper, egg, butter, cream):
- Capsicumfits better
- Asparagusfits about as well
- Potatofits about as well
- Onionthe original
Fit is the average pairing score against veal, vinegar, pepper, egg, butter, cream. 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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