Why it works: Horseradish and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,832 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Shallot Sauce, for Tripe, Etc
Ingredients
Directions
Make the sauce
In a saucepan, combine minced shallots and optional garlic with butter.
Add horseradish, lemon juice, salt, cayenne, and mustard; stir over medium heat for 5 minutes.
Gradually add milk and simmer for a few more minutes.
Remove from heat and let cool for 2 minutes.
Stir in beaten egg yolk mixed with cream or milk; whisk over low heat for 1-2 minutes without boiling.
Serve
Serve very hot.
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.
-
Horseradish + mustardtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Shallot + mustardtop 1% of all pairsSmell alikestrongCooked together859 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Shallot + horseradishtop 1% of all pairsSmell alikestrongCooked together376 recipes
Shared aroma: coumarin (sweet, hay).
-
Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Shallot + garlictop 4% of all pairsSmell alikestrongCooked together2,000 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
- Shallots
- Soften and build a mild, sweet onion flavor as the base of the sauce.
- Butter
- Carries the aromatics and adds richness and a silky mouthfeel to the sauce.
- Milk
- Forms the liquid body of the sauce, mellowing the sharp seasonings.
- Egg yolk
- Thickens the sauce gently and gives it a smooth, custard-like body when heated.
- Horseradish
- Provides the sharp, pungent heat that defines the sauce.
The step that matters
Adding the egg yolk. Egg yolk thickens through gentle heat. If the sauce boils, the yolk proteins can scramble and curdle, leaving the sauce grainy, so keep the heat low and whisk constantly.
Swap the garlic
The recipe marks garlic as optional. How well each one fits the dish's main ingredients (shallot, butter, horseradish, lemon, pepper, mustard, milk):
- Capersfits better
- Tarragonfits better
- Parsleyfits better
- Garlicthe original
Fit is the average pairing score against shallot, butter, horseradish, lemon, pepper, mustard, milk. 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 shallot 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
Mixed Mustard9 recipes
Horseradish Cream Sauce6 recipes
Wine Sauce (for stewed fruit)186 recipes