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.
Boil and serve
Fill a pot with cold water and add a generous amount of coarse sea salt.
Bring the water to a gentle boil, then add the mackerel.
Simmer the mackerel for 15 to 20 minutes, skimming off any scum that rises.
Check for doneness by ensuring the tails split and the eyes start to pop.
Serve the mackerel 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 flesh, which firms and turns opaque as it cooks in gently simmering water.
- Coarse sea salt
- Seasons the poaching water so the fish is flavoured from the outside in.
- Melted butter
- Adds richness and fat that complements the mild, oily flesh of the fish.
The step that matters
Simmering the mackerel gently. A rolling boil can break up the delicate flesh and toughen it, while gentle simmering cooks it evenly. Skimming removes scum that would cloud the poaching liquid and the fish's surface.
“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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