Name: White Soup
Ingredients: 1 quart chicken stock; 1 small onion, grated; ¼ teaspoon salt; ½ teaspoon black pepper; ½ cup boiled rice

Why it works: Chicken and rice are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 4,769 recipes. Both carry (e,e)-2,4-decadienal, which smells fatty, deep fried. The science ↓

White Soup

Ingredients

Directions

Heat the chicken stock in a pot.
Add the grated onion, salt, and black pepper.
Stir in the boiled rice.
Serve hot.

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.

Chicken + ricetop 5% of all pairs

Smell alikemoderate

Cooked together4,769 recipes

Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Chicken + oniontop 8% of all pairs

Smell alikemoderate

Cooked together17,814 recipes

Shared aroma: gamma-nonanolactone (coconut, sweet).
Onion + ricetop 9% of all pairs

Smell alikemoderate

Cooked together10,433 recipes

Shared aroma: 2,4-decadienal (seaweed).
Onion + peppertop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

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

Smell alikemoderate

Cooked together8,379 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).

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

What each ingredient does

Chicken stock: Forms the liquid base of the soup and carries the other flavors.
Onion: Adds aromatic flavor and a little sweetness as it softens in the stock.
Boiled rice: Adds body and thickens the soup slightly with starch.