OK, 23 years in the Marines have left me addicted to coffee. A large thermos is totally inadequate for my habit. Not to mention that my wife is just as bad, and we fish together allot! When we rode motorcycles we used to use the coffee bags that looked like tea bags and cooked over a tiny camp stove that sits atop the fuel cans.
Is there a safe method to brew coffee in the boat? I have a healthy respect for fire on a boat.