Name: Salad of Grape Fruit and Walnuts
Ingredients: 1 grapefruit; ½ cup walnut meats; 3 tablespoons oil; salt to taste; a dash of cayenne pepper; 1 tablespoon lemon juice

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 ↓

Salad of Grape Fruit and Walnuts

Ingredients

Directions

Prepare

Carefully remove the pulp from the grapefruit.
Add walnut meats in a proportion of half the quantity of pulp.

Dress and serve

Make a dressing by mixing oil, salt, cayenne pepper, and lemon juice.
Pour the dressing over the grapefruit and walnuts.
Serve very cold.

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.

Pepper + lemontop 3% of all pairs

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Grapefruit + lemontop 4% of all pairs

Smell alikestrong

Cooked together184 recipes

Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Grapefruit + peppertop 9% of all pairs

Smell alikemoderate

Cooked together117 recipes

Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
Walnut + lemontop 10% of all pairs

Smell alikestrong

Cooked together2,149 recipes

Shared aroma: 2-nonenal (fatty, green).
Grapefruit + walnuttop 10% of all pairs

Smell alikestrong

Cooked together46 recipes

Shared aroma: alpha-pinene (pine, turpentine).

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

What each ingredient does

Walnut meats: Add crunch and a rich, buttery texture that contrasts with the juicy grapefruit.
Oil: Carries fat-soluble flavor and gives the dressing a smooth, coating body.
Lemon juice: Adds acidity that brightens the sweetness of the grapefruit and balances the oil.
Grapefruit: Provides juicy pulp, sweet-tart flavor, and the fresh base of the salad.

“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.