Name: To Boil Eels
Ingredients: small eels; coarse sea salt; water; vinegar; parsley; butter

Why it works: Parsley and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 28,563 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓

To Boil Eels

Ingredients

Directions

Clean the eels well, then skin and wash them.
Cut off the heads and curl the eels.
Boil water with coarse sea salt and a little vinegar.
Add the eels to the boiling water and cook until done.
Garnish with parsley and serve with melted butter.

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 + buttertop 15% of all pairs

Smell alikemoderate

Cooked together28,563 recipes

Shared aroma: trans-2-hexenal (green, leafy).
Vinegar + parsleytop 16% of all pairs

Smell alikemoderate

Cooked together6,477 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Vinegar + buttertop 23% of all pairs

Smell alikemoderate

Cooked together13,513 recipes

Shared aroma: isoamyl acetate (banana, pear).