You burn it! This is just as bad. People having fires while bivvying. There are many lochs in scotland that have had there fishing rights stopped because of anglers having fires, I have watched many anglers ripping trees down and branches to have fire, Many even take axes with them!
Therr are places on loch lomond where there are no no bushes or trees on the banking! Loch Tay is another one... It is unheard of in england, and dont think i have come across a fire on a bank on an english water. Usually the waters are owned and baliffed regularly in england, not like the scottish and irish loch