Why it works: Tomato and celery are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 3,377 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Tomato Bouillon
Ingredients
Directions
Make the broth
Combine tomatoes and stock in a pot over medium heat.
Add onion, bay leaves, cloves, celery seed, and pepper.
Cover and cook for 20 minutes.
Strain the mixture through a sieve.
Clarify and serve
Beat the egg whites until slightly frothy, then add to the tomato mixture.
Bring to a boil and cook rapidly for 5 minutes.
Strain again through two layers of cheesecloth.
Reheat, season with salt, and serve with toasted bread cubes.
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 + celerytop 4% of all pairsSmell alikemoderateCooked together3,377 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Clove + celerytop 6% of all pairsSmell alikestrongCooked together4,668 recipes
Shared aroma: gamma-decalactone (peach, creamy).
-
Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Provide the main flavour and body of the broth.
- Stock
- Supplies the liquid base and savoury depth of the broth.
- Egg whites
- Coagulate as they heat, trapping particles so the broth clears.
The step that matters
Boiling the egg white mixture. Egg whites must be added and heated so they can rise and set, collecting cloudy particles into a raft. Boiling rapidly for the stated time lets the raft form properly, and straining afterwards removes it, leaving a clear broth.
Swap the onion
How well each one fits the dish's main ingredients (tomato, clove, celery, egg, pepper, bread):
- Capsicumfits better
- Carrotfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against tomato, clove, celery, egg, pepper, bread. 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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