Why it works: Lemon and butter are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Hollandaise Sauce
Ingredients
Directions
Prepare
Beat the egg yolks in a bowl and season with salt, lemon juice, and vinegar.
In a saucepan, thicken the boiling water.
Make the sauce
Add the butter to the thickened water and remove from heat.
Slowly stir in the egg mixture, mixing continuously.
Taste and add more vinegar if needed.
Serve
Serve with boiled fish.
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 + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Lemon + vinegartop 20% of all pairsSmell alikemoderateCooked together7,334 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Vinegar + buttertop 23% of all pairsSmell alikemoderateCooked together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
Egg and lemon barely smell alike, yet cooks put them together in 44,316 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
- Egg yolks
- Emulsify with the butter and thicken the sauce as they gently cook.
- Butter
- Adds richness and fat, creating a smooth, silky texture when emulsified.
- Lemon juice
- Adds acidity that brightens the flavour and balances the richness of the butter.
- Vinegar
- Adds sharp acidity and helps balance the sauce's richness.
The step that matters
Slowly stir in the egg mixture, mixing continuously. Adding the yolks too fast or letting the sauce get too hot can scramble the eggs. Gradual addition while stirring lets the yolks blend evenly into the butter and water, giving a smooth emulsion.
Swap the lemon
How well each one fits the dish's main ingredients (egg, vinegar, butter):
- Strawberryfits about as well
- Currantfits about as well
- Raspberryfits about as well
- Lemonthe original
Fit is the average pairing score against egg, vinegar, butter. 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 hollandaise 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.
Raspberry Vinegar214 recipes
Lemon Whey33 recipes
Lemon Wine31 recipes
Sugar Vinegar20 recipes