Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Lemon Sauce
Ingredients
Directions
Make the sauce
In a bowl, combine the lemon juice, Worcestershire sauce, coarse sea salt, and cayenne pepper, then mix well.
Transfer the sauce to a mayonnaise dish.
Serve with duck
When serving duck, make a lengthwise cut in the breast with a sharp knife.
Pour a little of the sauce over the duck and serve on very hot plates.
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.
-
Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Sauce + peppertop 27% of all pairsSmell alikelowCooked together15,303 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Lemon + saucetop 30% of all pairsSmell alikelowCooked together6,598 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Sauce and pepper barely smell alike, yet cooks put them together in 15,303 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lemon juice
- Provides acidity that brightens the sauce and balances the richness of the duck.
- Worcestershire sauce
- Adds savory depth and a salty, fermented flavour to the sauce.
Swap the lemon
How well each one fits the dish's main ingredients (sauce, pepper):
- Limefits better
- Lemonthe original
- Mangofits less well
- Avocadofits less well
Fit is the average pairing score against sauce, 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.
More lemon sauce recipes
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.

Hot Lemon Cream Sauce11 recipes
Wine Sauce (for stewed fruit)186 recipes
Caper Sauce180 recipes
Brown Sauce141 recipes