Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Bisque of Lobster and Shrimp
Ingredients
Directions
Prepare the lobster
Cut the heads off the lobsters and chop them into one-inch pieces, shells included.
Heat the butter in a pan over an open fire.
Add the lobster, carrot, onion, and celery to the pan.
Cook for 10 minutes, stirring frequently.
Pour in the brandy and sherry.
Ignite the liquors and stir until the flames extinguish.
Transfer the mixture to a mortar and pound to a paste.
Return the paste to the saucepan.
Simmer the bisque
Add the parsley, thyme, bay leaf, clove, and rice.
Moisten with water, white wine, and crushed tomatoes.
Season with salt and cayenne pepper.
Bring to a gentle boil for 1.5 hours, stirring occasionally.
Strain the soup through a sieve into a basin.
Strain through a Chinese strainer back into the saucepan.
Stir in the cream and let it simmer.
Remove the shells from the cooked shrimp.
Add the shrimp shells to the soup with butter.
Cook for 5 minutes.
Serve
Pour the bisque into a soup tureen.
Serve.
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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Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Carrot + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
-
Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Brandy + sherrytop 6% of all pairsSmell alikemoderateCooked together1,209 recipes
Shared aroma: ethyl cinnamate (sweet, balsamic).
-
Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 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
- Lobster
- Provides the main shellfish flavor and body, especially when the shells are pounded and cooked into the broth.
- Rice
- Thickens the broth as it cooks and softens, giving the bisque a smoother body.
- Cream
- Adds richness and a smooth, velvety texture to the finished bisque.
- Tomatoes
- Adds acidity and color, balancing the sweetness of the shellfish and vegetables.
- Butter
- Carries fat-soluble flavors from the shells and vegetables into the soup and adds richness.
- Onion
- Builds a sweet, savory base of flavor when softened in butter at the start.
The step that matters
Pounding the cooked lobster mixture to a paste. Crushing the shells and softened vegetables breaks them down so their flavor and color release into the broth during the long simmer. Pieces left whole would yield a thinner, less flavorful bisque.
Swap the onion
How well each one fits the dish's main ingredients (lobster, butter, carrot, celery, brandy, sherry, parsley):
- Turnipfits better
- Shallotfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against lobster, butter, carrot, celery, brandy, sherry, parsley. 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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