Why it works: Leek and butter work together. They rank in the top 15% of all ingredient pairs, and cooks put them together in 848 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
To Boil Leeks
Ingredients
Directions
Prepare
Cut the tender stalks of leeks into 6‑inch lengths and bind them in bundles.
Cook and serve
Boil the leeks in salted water until tender.
Drain the leeks and serve them on toast with melted butter.
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.
-
Leek + buttertop 15% of all pairsSmell alikemoderateCooked together848 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Young leeks
- Provide the main vegetable; tender stalks soften fully when boiled.
- Melted butter
- Adds richness and fat that coats the leeks and toast.
The step that matters
Boiling until tender. Leeks need to cook long enough for the tough fibers to soften; underdone leeks stay stringy and fibrous, while the bundles should be fully tender before draining.
“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.
You might also like
Leek Soup31 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.