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 Custards
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat the oven to 350°F (175°C).
Beat the eggs slightly and add the fish, milk, parsley, salt, and pepper.
Grease baking cups and scatter minced parsley over the sides.
Bake and serve
Pour the custard mixture into the cups.
Stand the cups in a pan with a little hot water.
Cover the tops of the cups with a sheet of white paper.
Bake until firm, about 25-30 minutes.
Serve in the cups or turn out as preferred.
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).
-
Fish + milktop 13% of all pairsSmell alikemoderateCooked together1,432 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
-
Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Fish + parsleytop 18% of all pairsSmell alikelowCooked together2,341 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Fish + peppertop 21% of all pairsSmell alikemoderateCooked together3,948 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set the custard into a firm, sliceable texture as they cook.
- Milk
- Adds moisture and softness, keeping the custard tender rather than dry.
- Cooked fish
- Provides the main body and flavour of the custard.
The step that matters
Bake until firm. Eggs set through gentle heat; overbaking or cooking too hard can curdle and toughen the custard. Standing the cups in hot water helps the heat reach them evenly and gently.
Swap the parsley
How well each one fits the dish's main ingredients (fish, egg, milk, pepper):
- Parsleythe original
- Nutmegfits about as well
- Tarragonfits less well
- Cardamomfits less well
Fit is the average pairing score against fish, egg, milk, 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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