Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
How to Cook Sweetbreads
Ingredients
Directions
Prepare the sweetbreads
Soak sweetbreads in cold water for a few moments, then skin and trim them.
Soak them again in cold water for 10 minutes, removing all excess fat.
Boil the sweetbreads until cooked through.
Cut the cooked sweetbreads into pieces the size of an English walnut.
Fry the pieces quickly in enough fat to cover until light brown.
Make the sauce
Cook the tomatoes with flour.
Strain the tomato mixture.
Season the sauce with butter, coarse sea salt, and black pepper.
Serve
Serve sweetbreads with the tomato sauce or with slices of broiled or fried tomatoes garnished with 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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + parsleytop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Sweetbreads
- The main protein, which becomes tender when boiled and then browned in fat.
- Flour
- Thickens the tomato mixture so the sauce becomes smooth and clings to the sweetbreads.
- Tomatoes
- Provide the acidity and body of the sauce, balancing the richness of the sweetbreads.
- Butter
- Adds fat and rich flavour to the finished sauce.
The step that matters
Frying the sweetbread pieces. Frying quickly in enough fat browns the surface through the Maillard reaction, adding flavour and colour. Frying too long or too hot can toughen and dry the sweetbreads.
Swap the tomato
How well each one fits the dish's main ingredients (butter, pepper, flour, parsley):
- Shallotfits better
- Carrotfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against butter, pepper, flour, parsley. 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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