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 ↓
V Horseradish Sauce
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Melt the butter in a saucepan over medium heat.
Stir in the flour and cook for 1 minute.
Gradually add the milk, stirring constantly until the mixture boils.
Remove from heat and stir in the egg yolks and grated horseradish.
Season with salt and pepper just before serving.
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.
-
Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Lemon + horseradishtop 9% of all pairsSmell alikestrongCooked together1,155 recipes
Shared aroma: coumarin (sweet, hay).
-
Flour + horseradishtop 10% of all pairsSmell alikestrongCooked together743 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + horseradishtop 11% of all pairsSmell alikemoderateCooked together2,646 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Enriches the sauce and carries flavour as the base of the roux.
- Flour
- Thickens the milk into a smooth sauce when cooked with the butter.
- Milk
- Forms the liquid base that thickens into a creamy sauce.
- Egg yolks
- Add richness and body to the sauce once it is off the heat.
- Grated horseradish
- Provides the sharp, pungent heat that defines the sauce.
The step that matters
Adding the egg yolks off the heat. Egg yolks can scramble if they meet high heat directly. Removing the pan from the heat before stirring them in lets them thicken the sauce gently and keeps it smooth.
Swap the horseradish
How well each one fits the dish's main ingredients (butter, flour, milk, lemon, pepper, egg):
- Asparagusfits better
- Shallotfits better
- Capsicumfits better
- Horseradishthe original
Fit is the average pairing score against butter, flour, milk, lemon, pepper, egg. 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 horseradish 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
Horseradish Cream Sauce6 recipes
Wine Sauce (for stewed fruit)186 recipes
Caper Sauce180 recipes