Mackerel: A Fishmonger's Guide

What Is Mackerel?

Mackerel (Scomber scombrus) is the brilliant blue-and-green striped fish you see flashing through summer shoals along the South Coast. It’s an oily, fast-moving pelagic fish that travels in huge schools, feeding on smaller fish and plankton. Iridescent when it’s just out of the water, mackerel is also the fish that loses its looks fastest. Within a day or two, the dazzling skin colours start to dull.

It’s packed with omega-3, it’s local, it’s sustainable, and pound for pound it’s one of the best-value fish you can buy. The only catch: you have to eat it fresh.

Where Our Mackerel Comes From

Local day-boats. From late spring through to early autumn, mackerel are landed at Poole, Lymington, Weymouth, and other South Coast ports. Many are caught on hand-lines, the most sustainable possible method. We buy from boats that come straight to the wharf with the morning’s catch. Outside the local season we also get mackerel from the Shetland Islands.

We won’t sell pelagic-trawled mackerel. The trawl method takes too many fish at once and damages the wider ecosystem. Hand-line and small-net catches only.

The Best Time to Buy Mackerel

May through October. That’s the window. Local mackerel runs as the water warms up, peaks in July and August, and tails off as autumn cools. Outside that season, the fresh mackerel you’ll see has come from further away, usually frozen or from longer supply chains.

If you want to eat mackerel year-round, smoked mackerel keeps for weeks and is brilliant: peppered, plain, hot-smoked. Same fish, different format.

How To Cook Mackerel

The cardinal rule with mackerel: fast and hot. The flesh is rich, oily, and full-flavoured, which means you want a cooking method that adds char or acid (or both) to cut through.

Grilled or BBQ’d whole: The classic. Score the sides, salt the cavity, brush with oil, char over high heat for 3-4 minutes a side. The skin blisters, the flesh cooks through, the smoke marries with the oil. Lemon and parsley at the end.

Pan-fried fillet: Skin-side down in a hot, dry pan (mackerel skin produces its own oil). 3 minutes, flip for 30 seconds. Salt, lemon, done. Don’t add fat.

Hot-smoked: A stove-top smoker, woodchips, fillets, 8-10 minutes. The result keeps in the fridge for days and works in salads, on toast with horseradish, flaked into pasta.

Pickled (escabeche): Fillets quick-fried, then bathed in a vinegar-and-aromatics marinade. Keeps for a week, brilliant tapas.

Raw, as sashimi: Only with the freshest fish, briefly cured with salt or vinegar. The Japanese treat it as a delicacy.

Buying Tips From The Counter

1. Colour is everything. Vivid, shimmering, iridescent: buy it. Dull, grey, faded: don’t.
2. Buy whole, not filleted. Fillets age faster and you can’t see the eyes or the skin clearly. Whole fish tell you the truth.
3. Eat it the same day if you can. Mackerel doesn’t keep. The reward for eating it fresh is enormous; the penalty for eating it stale is worse than any other common fish.
4. Cheap is a feature, not a bug. The same fish at three times the price in a restaurant is the same fish.

Mackerel From Parkstone Fisheries

Whole fresh mackerel when local boats are landing, usually May through October. Plus naturally smoked mackerel fillets year-round, and smoked mackerel pâté from the counter. Free delivery across all BH postcodes, £40 minimum order.