Name: Potatoes, a LA Lyonnaise
Ingredients: a tablespoonful of butter in a saucepan; a teaspoonful of onion chopped; parsley

Why it works: Onion and parsley are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 25,843 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓

Potatoes, a LA Lyonnaise

Ingredients

a tablespoonful of butter in a saucepan
a teaspoonful of onion chopped
parsley

Directions

Cut cold, boiled potatoes into dice. Melt a tablespoonful of butter in a saucepan, add a teaspoonful of onion chopped; fry the onion. Then add the potatoes and shake them about until they are very hot; but not brown. Add some chopped parsley.

Nutrition, whole recipe (rough)

147Calories

1 gProtein

12 gFat

10 gCarbs

What these numbers assume: 3 portions

Ingredient	Portion assumed	kcal
Butter	1 tbsp (14g)	102
Onion	1 medium (110g)	44
Parsley	1 tbsp chopped fresh (3.8g)	1

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By Shutt, William E., Mrs., [from old catalog] comp. 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. See the original page.

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.

Onion + parsleytop 9% of all pairs

Smell alikemoderate

Cooked together25,843 recipes

Shared aroma: 2,4-decadienal (seaweed).
Butter + oniontop 15% of all pairs

Smell alikemoderate

Cooked together42,912 recipes

Shared aroma: decanal (soap, orange peel).
Butter + parsleytop 15% of all pairs

Smell alikemoderate

Cooked together28,563 recipes

Shared aroma: trans-2-hexenal (green, leafy).