Name: Italian Sauce
Ingredients: 1 cup brown sauce (strained roast meat gravy); 1 teaspoon minced onion; 2 minced mushrooms; 2 tablespoons minced parsley; juice of 1 lemon; cayenne pepper to taste; salt to taste

Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Italian Sauce

Ingredients

Directions

Pour half the juice from the can of mushrooms into the brown sauce.
Add the minced onion, mushrooms, parsley, lemon juice, cayenne, and salt.
Simmer together for 15 minutes.

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.

Parsley + lemontop 1% of all pairs

Smell alikestrong

Cooked together14,037 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Lemon + peppertop 3% of all pairs

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Onion + parsleytop 9% of all pairs

Smell alikemoderate

Cooked together25,843 recipes

Shared aroma: 2,4-decadienal (seaweed).
Onion + mushroomtop 10% of all pairs

Smell alikemoderate

Cooked together10,626 recipes

Shared aroma: 2,4-decadienal (seaweed).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Brown sauce: Forms the savory base of the sauce and carries the other flavors.
Mushrooms: Add earthy flavor and a tender, meaty texture to the sauce.
Lemon juice: Adds acidity that brightens the rich, savory flavors.

Swap the onion

How well each one fits the dish's main ingredients (sauce, meat, mushroom, parsley, lemon, pepper):

Shallotfits better
Capsicumfits better
Spinachfits better
Onionthe original

Fit is the average pairing score against sauce, meat, mushroom, parsley, lemon, pepper. 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.