Why it works: Tomato and onion are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Baked Stuffed Tomatoes
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the filling
Cut a round top off each tomato and scoop out the pulp.
Melt the butter in a frying pan.
Chop the onion.
Fry the onion until almost cooked but not brown.
Add the ham and cook thoroughly.
Mix in the tomato pulp and enough breadcrumbs to absorb the fat.
Add seasoning.
Fill and bake
Fill the tomatoes with the mixture, but do not pack too tightly.
Sprinkle a few browned crumbs on top.
Replace the lid of the tomatoes.
Place the tomatoes in a buttered tin covered with buttered paper.
Cook in a moderate oven at 350°F (175°C) until heated through.
Serve
Serve on small croutons of bread and garnish 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.
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Ham + buttertop 16% of all pairsSmell alikemoderateCooked together5,475 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Onion + hamtop 18% of all pairsSmell alikelowCooked together4,159 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
-
Tomato + buttertop 22% of all pairsSmell alikemoderateCooked together6,918 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Hold the filling and soften in the oven while their juices moisten the stuffing.
- Ham or bacon
- Adds savoury, salty flavour and fat that carries flavour through the filling.
- Breadcrumbs
- Absorb the melted butter and fat, giving the filling body so it holds together.
- Butter
- Carries the onion and ham flavour and keeps the filling rich and moist.
- Onion
- Adds aromatic sweetness and depth as it softens gently in the fat.
The step that matters
Fry the onion until almost cooked but not brown. Browning the onion turns its sugars bitter and sharp, and it will keep cooking in the oven, so it should be left pale and only softened.
Swap the tomato
How well each one fits the dish's main ingredients (onion, ham, butter):
- Potatofits better
- Leekfits better
- Mustardfits better
- Tomatothe original
Fit is the average pairing score against onion, ham, 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Cream of Tomato Soup107 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes