Name: Gumbo Soup with Stock
Ingredients: 1 shank of beef; water (enough to cover the beef); 1 tablespoon coarse sea salt; 2 onions, chopped fine; a little pepper; 1 tablespoon sugar; 2 tablespoons flour, browned; butter (for mixing with flour); 4 hard-boiled eggs, sliced

Why it works: Beef and onion are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,092 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Gumbo Soup with Stock

Ingredients

Directions

Crack the bone of the beef shank and place it in a pot.
Add enough water to cover the beef.
Stir in the coarse sea salt, chopped onions, and a little pepper.
Boil for six hours.
Remove from heat.
Take out the bone.
Cut the beef into small pieces.
Return the beef to the pot.
Mix the browned flour with butter and add it to the pot.
Stir in the sugar and sliced hard-boiled eggs.

Recipe from a historical cookbook (Internet Archive).

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.

Beef + oniontop 7% of all pairs

Smell alikemoderate

Cooked together17,092 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Beef + peppertop 10% of all pairs

Smell alikemoderate

Cooked together18,971 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + peppertop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Flour + buttertop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Sugar + flourtop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).

Flour and butter 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

Beef shank: Long simmering breaks down connective tissue, giving the broth body and tender meat.
Browned flour: Cooked flour thickens the broth and adds a toasted, nutty flavor.
Onions: Softened onions add sweetness and aromatic depth to the broth.
Hard-boiled eggs: Egg adds richness and a soft, creamy texture to the soup.

The step that matters

Mix the browned flour with butter and add it to the pot. Flour added directly to hot liquid clumps; mixing it with butter first coats the starch granules so they disperse and thicken smoothly.

Swap the onion

How well each one fits the dish's main ingredients (beef, pepper, sugar, flour, butter, egg):

Capsicumfits better
Chivefits better
Leekfits better
Onionthe original

Fit is the average pairing score against beef, pepper, sugar, flour, butter, 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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Corned Beef87 recipes

Beef Broth67 recipes

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Gumbo Soup with Stock