Name: Knuckle of Veal Ragout
Ingredients: 2 pounds knuckle of veal, sliced ½ inch thick; Bones from the veal; 1 onion, sliced; 1 stick of celery or 1 carrot, sliced; A handful of sweet herbs; Salt and pepper, to taste; ¼ cup flour; 2 tablespoons butter; 1 tablespoon ketchup; ⅓ cup white wine; Juice of ½ lemon; Ham or bacon rashers, for garnish

Why it works: Celery and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 16,012 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

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.

Celery + peppertop 5% of all pairs

Smell alikestrong

Cooked together16,012 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Onion + celerytop 7% of all pairs

Smell alikemoderate

Cooked together18,518 recipes

Shared aroma: guaiacol (smoky, sweet).
Butter + white winetop 9% of all pairs

Smell alikemoderate

Cooked together5,083 recipes

Shared aroma: ethyl octanoate (fruity, wine).
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).

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

Knuckle of veal: Provides the meat that becomes tender during the ragout's long, gentle cooking.
Veal bones: Release gelatin and flavor into the liquid, giving the gravy body and richness.
Flour: Coats the veal for browning and, with butter, thickens the gravy.
Butter: Adds fat and richness, and with flour forms a roux that thickens the gravy.
White wine: Adds acidity and aroma that brighten the rich, savory sauce.
Lemon juice: Adds acidity that sharpens the flavor and balances the richness of the sauce.

The step that matters

Fry the veal slices until golden brown. Frying floured veal creates browning through the Maillard reaction, which adds deep savory flavor. Pale or overcrowded frying steams the meat and dulls the flavor of the finished sauce.

Swap the onion

How well each one fits the dish's main ingredients (veal, celery, pepper, flour, butter, ketchup, white wine):

Carrotfits better
Shallotfits better
Capsicumfits better
Onionthe original

Fit is the average pairing score against veal, celery, pepper, flour, butter, ketchup, white wine. 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.

Knuckle of Veal Ragout