Why it works: Butter and pepper are a kitchen classic. They rank in the top 21% of all ingredient pairs, and cooks put them together in 85,593 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Brussels Sprouts
Ingredients
Directions
Prepare
Wash the Brussels sprouts in plenty of cold water.
Trim the stalks and remove any withered leaves, then place them in a basin of clean cold water.
Boil and finish
Bring a pot of salted water with a small pinch of baking soda to a boil.
Drain the sprouts and add them to the boiling water without the lid for about 10 minutes.
Drain the sprouts again and return them to the pot with ½ oz of butter, salt, and pepper.
Gently shake the pot to coat the sprouts with butter, then serve them neatly on a dish.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Brussels sprouts + peppertop 24% of all pairsSmell alikelowCooked together35 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Brussels sprouts + buttertop 34% of all pairsSmell alikelowCooked together20 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
- Brussels sprouts
- Form the main body of the dish, cooking to a tender, moist texture.
- Butter
- Adds richness and a glossy coating that carries flavour over the sprouts.
- Baking soda
- Raises the cooking water's alkalinity, helping the sprouts keep a bright green colour.
The step that matters
Cooking the sprouts in boiling water. Boiling for about 10 minutes must be timed carefully: overcooking makes sprouts soft and sulphurous, while undercooking leaves them hard. Keeping the water at a full boil and the lid off lets sulphur compounds escape, which keeps the flavour mild and the colour green.
Swap the brussels sprouts
How well each one fits the dish's main ingredients (butter, pepper):
- Capsicumfits better
- Potatofits better
- Carrotfits better
- Brussels sproutsthe original
Fit is the average pairing score against butter, pepper. Candidates are from the same food group and used in at least 100 recipes.
“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
The 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.

Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes