Why it works: Pepper and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Sweetbreads with Tomatoes
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Soak the sweetbreads in warm salt water for 1 hour.
Boil the sweetbreads for 10 minutes to firm and whiten them.
Stew
In a stew-pan, combine water, sweetbreads, pepper, salt, browned flour, and butter. Stir well.
Stew slowly for 30 minutes.
Transfer to a 400°F (200°C) oven until nicely browned.
Finish the sauce
Remove the sweetbreads and place them in a dish.
Pour the stewed tomatoes into the gravy.
Thicken with flour rubbed smooth with butter, and season.
Bring to a boil.
Strain the sauce.
Pour it over the sweetbreads before serving.
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 + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + tomatotop 22% of all pairsSmell alikemoderateCooked together6,918 recipes
Shared aroma: 3-hexenal (apple, fruity).
Flour and butter 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
- Main protein; boiling firms and whitens them, and slow stewing makes them tender.
- Browned flour
- Adds color and body to the gravy as it cooks.
- Flour
- Thickens the sauce once rubbed smooth with butter and boiled.
- Butter
- Adds richness and helps smooth the flour so it blends without lumps.
- Stewed tomatoes
- Add acidity, moisture and savory flavor to the gravy.
The step that matters
Thicken with flour rubbed smooth with butter, then boil. Flour added without being rubbed smooth in butter forms lumps that will not blend into the sauce. Bringing the sauce to a boil after thickening fully thickens the starch and cooks out the raw flour taste.
Swap the tomato
How well each one fits the dish's main ingredients (pepper, flour, butter):
- Shallotfits better
- Chivefits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against pepper, flour, butter. 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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