Why it works: Tomato and pepper 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 ↓
Noodles with Tomato Sauce
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the tomato sauce
Boil the tomatoes until soft.
Rub the cooked tomatoes through a sieve.
Add finely chopped onion, butter, salt, pepper, and sugar to the tomato mixture.
Make the noodles
In a bowl, beat the egg with water, salt, and red pepper.
Gradually add flour to form a very stiff dough.
Let the dough stand for a few minutes.
Roll the dough very thin.
Cut the dough into noodles.
Let the noodles dry.
Bake and serve
Cook the noodles in boiling salted water for 20 minutes, then drain.
Pour the tomato sauce over the noodles.
Grate cheese on top.
Place the dish in a 400°F (200°C) oven for 10 minutes.
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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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Eggs
- Bind the dough and add structure so the noodles hold their shape when cooked.
- Flour
- Forms the stiff dough whose gluten network gives the noodles their chew and structure.
- Tomatoes
- Provide the main body, moisture and acidity of the sauce.
- Onion
- Adds savory depth and aroma to the tomato sauce.
- Butter
- Adds fat and richness, rounding out the acidity of the tomatoes.
- Cheese
- Melts and browns on top, adding savory flavor and a golden crust.
The step that matters
Rolling the dough very thin. Thin dough cooks through quickly and stays tender, while thick dough stays dense and gummy in the center. Because the dough is very stiff, it needs to be rolled evenly so the noodles cook at the same rate.
Swap the onion
How well each one fits the dish's main ingredients (tomato, butter, egg, pepper, sugar, flour, cheese):
- Capsicumfits better
- Asparagusfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against tomato, butter, egg, pepper, sugar, flour, 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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