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 ↓
Baked Haddock or Whiting and Black Butter
Ingredients
Directions
Prepare the fish
Prepare the stuffing by mixing oatmeal, chopped hard-boiled eggs, butter, herbs, pepper, salt, and lemon juice.
Wash the fish in salted water and dry it thoroughly.
Stuff the fish with the prepared mixture and place it in a greased baking tin.
Bake the haddock
Baste the fish regularly and bake for 1 hour.
Make the black butter
For the black butter, heat the fresh butter until almost black.
Gradually sprinkle in the flour, stirring until it is brown.
Slowly add cold water and stir continuously.
Add lemon juice and serve the sauce hot with the 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.
-
Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Egg + flourtop 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).
-
Butter + haddocktop 16% of all pairsSmell alikelowCooked together764 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Butter and flour 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
- Haddock or whiting
- Forms the main body of the dish, cooking gently inside its stuffing and baking tin.
- Oatmeal
- Absorbs moisture and binds the stuffing so it stays moist during baking.
- Hard-boiled eggs
- Add body and richness to the stuffing as they bind with the butter and oats.
- Butter
- Adds richness and moisture to the stuffing, and browns in the black butter sauce.
- Flour
- Thickens the black butter sauce as it cooks and toasts in the hot fat.
- Lemon juice
- Adds acidity that brightens the stuffing and the finished black butter sauce.
The step that matters
Heating the butter for the black butter. Butter solids darken quickly once the fat gets very hot, so it can pass from nutty brown to burnt in seconds. Watch it closely and stop heating as soon as it turns dark.
“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.
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.
Lemon Sauce236 recipes
Boiled Haddock10 recipes
Tomato Soup526 recipes
Brown Bread461 recipes