Why it works: Parsley and pepper 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 ↓
Spaghetti and Meat Balls
Ingredients
Directions
Make the meatballs
Combine hamburger steak, parsley, egg, bread crumbs, chopped onion, salt, and pepper in a bowl.
Roll the mixture into small balls.
Make the sauce
Combine tomatoes, green pepper, chopped onion, bay leaves, and water in a pot.
Boil the mixture for 1 hour.
Press the sauce through a colander and return it to the pot.
Boil the sauce again.
Add butter and seasoning.
Add the meatballs to the sauce.
Simmer gently for 40 minutes.
Cook and serve
Bring 2 quarts of water to a boil in another pot.
Add salt and spaghetti, cooking for 20 minutes.
Drain the spaghetti.
Pour the tomato sauce with meatballs over the spaghetti.
Serve hot with grated Roman cheese on the side.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Bread + cheesetop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hamburger steak
- Forms the meatballs and provides the main meaty body and richness.
- Egg
- Binds the meatball mixture so the balls hold their shape while cooking.
- Bread crumbs
- Absorb moisture and keep the meatballs tender rather than dense.
- Tomatoes
- Form the base of the sauce, giving body, acidity and flavour.
- Spaghetti
- Serves as the starch base that carries the sauce and meatballs.
The step that matters
Simmer gently for 40 minutes. A gentle simmer lets the meatballs cook through and firm up without breaking apart or toughening. A hard boil can crumble them and make the meat dry and tough.
Swap the onion
How well each one fits the dish's main ingredients (parsley, egg, bread, pepper, tomato, butter, cheese):
- Capsicumfits better
- Potatofits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against parsley, egg, bread, pepper, tomato, butter, cheese. 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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