Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Southern Black Bean Soup
Ingredients
Directions
Soak the beans
Wash the black beans thoroughly and soak them in enough water to cover overnight.
The next morning, do not drain the water; add 3 quarts more and the soup shank.
Cook and season
Cook slowly for 6 hours.
Add cayenne and salt to taste.
One-half hour before it's done, add the ground allspice.
Once cooked, strain the beans and liquid through a colander.
Flavor with a little sherry.
Serve
Serve with thin slices of lemon and hard-boiled eggs in each dish.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + allspicetop 5% of all pairsSmell alikestrongCooked together6,395 recipes
Shared aroma: estragole (anise, licorice).
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Allspice + lemontop 6% of all pairsSmell alikestrongCooked together2,083 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Beans + peppertop 11% of all pairsSmell alikemoderateCooked together4,733 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + allspicetop 11% of all pairsSmell alikestrongCooked together211 recipes
Shared aroma: linalool (floral, citrus).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Black beans
- Form the body of the soup and thicken the liquid as they break down during long cooking.
- Soup shank
- Releases savory flavor and richness into the cooking liquid over the long simmer.
- Ground allspice
- Adds warm, aromatic spice notes that build during the final half hour of cooking.
- Sherry
- Adds a light, sweet-acidic aroma that brightens the finished soup.
The step that matters
Cook slowly for 6 hours. Beans need a long, gentle simmer to become fully tender and to release their starch, which gives the soup body. Boiling hard can break the beans apart unevenly and leave the liquid cloudy or thin.
Swap the beans
How well each one fits the dish's main ingredients (pepper, allspice, sherry, lemon, egg):
- Walnutfits better
- Almondfits about as well
- Chickpeafits about as well
- Beansthe original
Fit is the average pairing score against pepper, allspice, sherry, lemon, egg. 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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