Why Sausages Burn Before They're Cooked Through

A good sausage is a dense, fatty, tightly packed thing, and heat has to travel a long way to reach the middle. Crank the grill up high and the casing blackens and splits long before the centre is anywhere near safe. The result is a burnt shell wrapped around pink, unappetising filling — the most common outdoor cooking disappointment there is.

There are two other culprits. The first is sugar. Sticky glazes, honey mustard, barbecue sauce and sweet chilli marinades all caramelise fast, and on a hot grate they turn from glossy to bitter in under a minute. The second is pricking. Stabbing a sausage to "let the fat out" does exactly that — it drains the juices that keep it succulent and drips fat onto the coals, which is how you get flames licking up the sides and blackening everything. Never prick a sausage you intend to grill.

Set Up a Two-Zone Grill

This is the single change that will transform your results. Instead of spreading heat across the whole grill, create a hot side and a cool side.

• Charcoal: pile lit coals on one half of the grill and leave the other half empty. Add a foil tray of water under the cool side if you want extra insurance.
• Gas: light only the burners on one side and leave the rest off. Close the lid and let it come up to temperature for ten minutes.
• Target medium heat. Hold your palm about 10cm above the grate. You should be able to keep it there for five or six seconds. Any less and you're too hot.
• Clean and oil the grate. Once hot, scrub it with a wire brush, then, holding a folded piece of kitchen roll in tongs, wipe it with a little neutral oil. This is what stops the casing tearing on contact.

Cook Them Gently, Then Finish Them Fast

Lay the sausages on the cool side of the grill, put the lid on and keep the vents open. Leave them alone for the first three minutes, then turn them a quarter turn with tongs — never a fork, which punctures the skin. Keep turning every three minutes or so.

Expect twelve to fifteen minutes of indirect cooking for a decent butcher's sausage. After that, move them over to the hot side for two or three minutes, turning once, just to colour the casing and give it that satisfying snap. Total time is usually eighteen to twenty minutes; thin chipolatas will be closer to twelve. Keep a squeeze bottle of water nearby for flare-ups, and if flames appear, simply slide the sausages back to the cool side rather than dousing the whole grill.

How to Tell When They're Ready

The reliable answer is a temperature probe. Push it into the thickest part of the sausage, avoiding the metal ends of the probe touching the grate. You are looking for 70–75°C.

Without a thermometer, look for three signs: the sausage feels firm but still has a little spring when you press it, the juices that escape run clear rather than pink, and a test one cut open shows no trace of raw pinkness at the centre. When they're done, rest them for three to five minutes under a loose tent of foil. This lets the juices settle back into the meat instead of running out onto the board.

Build a Better Hot Dog

Great sausages deserve better than a cold, squashed bun. Split your buns and toast them cut-side down on the cool side of the grill for thirty seconds — just enough to crisp the surface and stop them going soggy.

Then keep your toppings disciplined. Aim for three or four elements that contrast with each other: something creamy, something sharp, something crunchy. A smear of mustard or a spoon of soured cream, a crisp shred of cabbage or pickled onion, and a generous spoon of salsa is a far better hot dog than one buried under six competing jars.

Latin-Inspired Salsas That Love a Grilled Sausage

Salsas are the natural partner to a charred, smoky sausage because they bring acidity and freshness to something rich. Make them half an hour ahead so the flavours settle, and serve them at room temperature — never straight from the fridge.

• Charred pineapple and red chilli. Grill thick pineapple rings on the hot side until marked, then dice with red onion, lime juice, chopped coriander and a pinch of salt. Sweet, sour and hot all at once.
• Pico de gallo. Ripe tomatoes, white onion, a jalapeño, plenty of lime and coriander. Dice everything small, salt it well and drain off the excess liquid before it reaches the bun.
• Salsa verde. Roast green tomatoes or tomatillos with a chilli and a clove of garlic until blistered, then blitz with coriander, lime and salt. Sharp and herbal — excellent with pork.
• Chimichurri. Finely chop parsley with oregano, garlic and a pinch of chilli flakes, then loosen with red wine vinegar and olive oil. Spoon it over hot sausages the moment they come off the grill.
• Mango and habanero. Diced mango, a little finely chopped habanero, red onion, lime and mint. Fiery and fruity, and the one your guests will ask about.

Whichever you choose, drain it well, keep it in a shallow bowl and add a wedge of lime on the side. Cook your sausages slowly, finish them quickly, and let the salsa do the shouting.