Why it works: Pepper and lemon 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 ↓
Drawn Buttbb
Ingredients
Directions
Make the sauce base
Rub together two tablespoonfuls of flour and a half cup of butter until smooth.
Pour one pint of boiling water over the mixture.
Season with salt and pepper.
Break into the mixture one or two raw eggs, letting the whites cook into pieces and breaking the yolks while still soft.
Boil for a few minutes.
Finish and serve
Beat butter into a cream.
Add yolks one by one.
Add lemon juice, pepper, and salt.
Place the bowl in a saucepan of boiling water.
Beat with an egg beater until it begins to thicken (about a minute).
Add boiling water; stir all the time.
When it is like a soft custard, it is done.
Pour around meat or fish.
Nutrition, whole recipe (rough)
Counts 7 of 8 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 7 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
| Water | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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. See the original page.
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.
-
Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Flour
- Thickens the sauce so it becomes smooth and coats the spoon.
- Butter
- Adds richness and fat, giving the sauce a rounded, smooth mouthfeel.
- Eggs
- Set with gentle heat to thicken the sauce into a soft custard texture.
- Lemon juice
- Adds acidity that brightens the rich butter and egg flavor.
The step that matters
Thickening the eggs over gentle heat. Egg proteins set at moderate temperatures. If the sauce gets too hot or is boiled hard, the eggs can curdle and turn grainy, so keep the heat gentle and stir constantly.
Swap the lemon
How well each one fits the dish's main ingredients (flour, butter, egg, cream, pepper):
- Lemonthe original
- Raisinfits about as well
- Coconutfits less well
- Figfits less well
Fit is the average pairing score against flour, butter, egg, cream, 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.
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