Why it works: Fennel and butter work together. They rank in the top 27% of all ingredient pairs, and cooks put them together in 647 recipes. Both carry anethole, which smells sweet, anise. The science ↓
To Boil Mackerel
Ingredients
Directions
Prepare
Open the mackerel and remove the insides carefully, keeping the roe separate.
Wash the mackerel and roe gently in cold water.
Cook
Fill a pot with water, add a generous amount of coarse sea salt, and bring it to a gentle boil.
Place the mackerel in the pot and simmer for 15 to 20 minutes, skimming off any scum that rises.
Check for doneness by ensuring the tails split and the eyes start to bulge.
Serve
Remove the mackerel from the pot and serve on a napkin with fennel or gooseberry sauce and melted butter.
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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Fennel + buttertop 27% of all pairsSmell alikemoderateCooked together647 recipes
Shared aroma: anethole (sweet, anise).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mackerel
- Provides the main protein, which firms and turns opaque as it cooks gently in the water.
- Melted butter
- Adds fat and richness to the lean-to-moderate flesh when served over the fish.
- Fennel or gooseberry sauce
- Its tartness and aroma cut through the richness of the oily fish.
The step that matters
Simmer gently and skim the scum. Boiling hard breaks the fish apart and churns the scum back in. Gentle simmering with skimming keeps the water clear and the flesh intact, as the rising foam is coagulated protein and impurities.
“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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