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Why octopus is worth the fuss

Octopus has a reputation as the dish that defeats home cooks: rubbery, chewy, and destined for the bin. In truth, it is one of the most forgiving things you can cook, as long as you accept that it asks for time rather than attention. The method is simple. Freeze it, braise it low and slow, then finish it hard and fast over fire. That is genuinely the whole trick.

On the Greek islands, grilled octopus is taverna food at its most elemental — a few curled tentacles, a squeeze of lemon, a dusting of dried oregano, and a slick of peppery olive oil. It arrives as mezze with bread and a glass of something cold and white, and it disappears in minutes. There is no reason your own kitchen cannot produce the same thing, whether you have a barbecue, a griddle pan, or a small balcony grill.

Choosing and defrosting your octopus

Frozen octopus is not a compromise: in most British fishmongers and supermarkets it is the sensible buy, and freezing does some of the tenderising work for you. Look for whole, plump specimens with intact tentacles and no freezer burn.

• Size: a 1.5 kg octopus will serve four generously as mezze once cooked, because it loses a lot of weight. Small ones (around 500 g) cook faster but dry out more easily.
• Fresh vs frozen: if you can only find fresh, buy it, rinse it, and freeze it yourself for at least 48 hours before cooking.
• Prepared: most are already cleaned, but check inside the head cavity for the beak and any grit, and cut it out if it is still there.
• Defrosting: thaw in the fridge overnight, still in its packaging, over a tray. Do not rush it in warm water.

Tenderising: freeze, salt, and ignore the folklore

You will hear about beating octopus against rocks, or dropping a wine cork into the pot. The cork is harmless and traditional, and I still add one out of superstition, but the science of tenderising lies elsewhere. Ice crystals formed during freezing rupture the muscle fibres, which is why frozen octopus is often more tender than fresh.

What genuinely matters is heat. Octopus collagen tightens viciously at a hard boil and then slowly relaxes into gelatin at a gentle simmer. Boil it furiously and you get rubber. Barely bubble it and you get silk. Massaging it with coarse salt for ten minutes before cooking is also worth doing — it draws out surface slime and firms the flesh so it holds its shape on the grill. Rinse it thoroughly afterwards.

The braise: low, slow, and barely trembling

Find a pot that holds the octopus snugly. Add a bay leaf, a few black peppercorns, a halved onion, a garlic clove, a splash of red wine vinegar, and — if you like — a glass of dry white wine or a little water. The octopus releases plenty of its own liquid, so you rarely need much more.

Bring it just to the point where a lazy bubble breaks the surface, then turn the heat right down, cover, and leave it alone. Timings are a guide, not a rule:

• 500 g: 40–50 minutes
• 1–1.5 kg: 60–75 minutes
• 2 kg and over: up to 90 minutes

Test by pushing a thin knife into the thickest part of a tentacle just below the head. It should slide in with only a whisper of resistance — not mushy, not springy. Then take the pot off the heat and let the octopus cool completely in its own cooking liquid. This is the step most people skip, and it is the one that keeps the meat moist. Once cool, lift it out and refrigerate it. It will keep for three or four days, which means you can braise on a Sunday and grill on a Wednesday.

One word of warning: keep lemon juice away from the braising pot. Add strips of zest if you want citrus in the background, but the acid can toughen the flesh during a long cook. Save the juice for the plate.

Charring: hot, fast, and confident

Cut the cooled octopus into sections at the joints between the tentacles. Pat them dry — really dry — and toss with a tablespoon of olive oil and a pinch of salt.

Get a ridged griddle pan smoking hot, or wait until the coals on your barbecue have settled to a fierce glow. Lay the pieces on and do not move them for two to three minutes, until the underside is blistered and dark in patches. Turn once, give them another two minutes, and take them off. The octopus is already cooked through; you are only chasing flavour and colour. Any longer and you are simply drying it out.

If you are working indoors and want a smoky note, a light pinch of smoked paprika in the oil before grilling does the job without overwhelming the taste of the sea.

Serving it the Greek way

Pile the grilled octopus onto a warm plate and dress it while it is still hot, so everything soaks in. Generous extra virgin olive oil, a good squeeze of lemon, a scattering of dried oregano rubbed between your fingers, flaky sea salt, and a spoonful of capers or thin slivers of red onion if you fancy them.

Serve with warm pitta or sourdough, and let it sit alongside the rest of a mezze table: sharp feta, a bowl of olives, hummus or fava, a tomato and cucumber salad with plenty of parsley. A chilled assyrtiko or a dry Greek rosé is the obvious match, though a crisp English white does the job nicely too. The leftovers — if there are any — are excellent chopped into a warm potato salad the next day.