Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Fish Relish
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Dry the roe well after boiling.
Mince the cold fish and season with salt and pepper.
Mix the roe with the butter and the yolks of the boiled eggs.
Cut the whites of the boiled eggs into thin rings.
Assemble and bake
Layer mashed potatoes at the bottom of a deep buttered dish.
Alternate layers of fish, drawn butter, and egg whites with the roe mixture.
Top with more mashed potatoes.
Cover and bake in a 400°F (200°C) oven until it smokes and bubbles.
Remove the cover and brown for a few minutes.
Serve
Serve in the baking dish with pickles.
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.
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + fishtop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + potatotop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Drawn butter
- Adds richness and moisture, keeping the layers from drying out during baking.
- Mashed potato
- Forms the base and top layers, adding body and a soft, moist texture.
- Eggs
- Egg yolks bind the roe mixture and whites add structure and a delicate set.
- Cod, halibut, or shad
- Provides the main fish flavor and the bulk of the relish's filling.
The step that matters
Drying the roe. Roe holds water after boiling; if it stays wet it can make the mixture soggy and dilute its flavor during baking.
Swap the potato
How well each one fits the dish's main ingredients (butter, egg, fish, roe, parsley, pepper):
- Potatothe original
- Chivefits about as well
- Shallotfits about as well
- Capsicumfits less well
Fit is the average pairing score against butter, egg, fish, roe, parsley, 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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