The smell of woodsmoke drifting across a Lakeland tarn feels timeless, but the ground beneath it often tells a different story. Upland peat, mossy fell tops and the thin, wind-scoured soils of our national parks take decades to recover from a single scorch mark. In popular spots, hundreds of small fires a season add up to bare, eroded patches that widen into gullies with every storm. The good news is that you can still boil a brew in a howling gale without leaving so much as a dark smudge behind. It simply comes down to choosing the right stove and fuel for the job.

Why the Stove in Your Pack Is an Environmental Decision

An open fire is charming until you look at what it leaves. A ring of stones concentrates heat into the soil, sterilising the top few centimetres of whatever lives there. That thin crust of lichen, moss and roots holds fragile ground together on slopes where rain arrives sideways. Once it is gone, the peat underneath dries, cracks, and washes away.

There is also the wood itself. Dead branches are habitat, not fuel, and in many upland areas timber has to be carted in from somewhere else, often in plastic netting. Choosing a contained stove means your heat source is controlled, portable and gone by morning. It is the single easiest Leave No Trace decision you can make.

Canister Gas: The Reliable All-Rounder

For most three-season walking in Britain, a canister stove is the sensible default. It lights instantly, needs no priming, and turns off with a twist of the valve — no hot embers to worry about.

• Best for: fast morning brews, quick dinners, and any trip where you want minimal fuss in the rain.
• Efficiency: expect roughly eight to ten litres of boiled water from a 100 g canister in still summer air. That figure drops sharply in cold or wind.
• Watch out for: canisters lose pressure in the cold, especially the plain butane blends sold for summer picnics. Look for an isobutane and propane mix for anything above the snowline or below freezing.
• Waste: buy the largest canister your trip justifies. A half-used 100 g canister is more packaging per brew than a 450 g one, and every empty must be carried out.

Alcohol Stoves: Quiet, Light and Slow

A simple spirit burner — methylated spirits, or meths, in a shallow pan with a simmer ring — is about as low-impact as cooking gets. There are no pressurised parts, no canisters to dispose of, and the whole set-up can weigh almost nothing.

• Best for: solo trips, long-distance paths, and anyone who enjoys a deliberate, unhurried camp.
• Efficiency: roughly four to five litres of boiled water per 500 ml of fuel, so plan on carrying more weight in liquid than you would in gas.
• Wind: alcohol flames are easily bullied. A close-fitting windshield and a bit of pre-warming in cold weather make a real difference.
• Watch out for: meths is nearly invisible when burning. Never top up a hot burner, and always let it cool fully before refilling.

Wood-Burning and Gasifier Stoves

Twin-walled gasifier stoves burn twigs so efficiently that they produce very little smoke, which is why they have become popular with lightweight travellers. The catch is that they still require fuel, and in Britain that fuel usually has to come from somewhere.

Only use one where fires are genuinely permitted, and only with dead wood collected from the ground — never snapped from a living tree, never from a nature reserve, and never from peat. Keep the burn short, on a flat rock or a metal base if you have one, and carry out every scrap of char and ash. In the Peak District, Snowdonia, the Cairngorms and most lowland heath, the answer is simply no: packed-in fuel or a gas canister instead.

Boiling Water in Windy Weather

Wind steals more heat than most people realise, sometimes doubling your fuel use. A few cheap habits transform efficiency:

• Use a windshield that wraps most of the way round, leaving a gap for oxygen. Foil ones cost pennies and fold flat.
• Insulate the base. A square of closed-cell foam or a flat stone stops heat draining into cold ground and protects the surface beneath.
• Find natural shelter behind a boulder or a bank — but pitch well away from the lip of fragile peat hags, which crumble easily.
• Put the lid on and use a wider pot for a wider flame. A lidded pot boils noticeably faster than an open mug.
• Keep the flame blue. A roaring orange flame is a sign of wasted fuel and a sooted pot.

Fuel, Waste and Treading Lightly

Spent gas canisters should be punctured once genuinely empty — outdoors, well away from anything flammable — and taken home for recycling with the metal. Meths bottles go home too. Do not leave half-empty fuel for the next person; it becomes litter.

Cook on rock, gravel or existing bare ground rather than vegetation, and stay well away from watercourses and tarns. If you are wild camping, check the access rules first: Scotland is generous, most of England and Wales is not, and permission is the first act of good practice. Do all that, and the only trace you will leave is the smell of coffee on the breeze.