Thanks for the tip. It is on my list to purchase.
Now what vessel is used to heat the water. Currently I don't have any small / light cooking gear to take camping.
just a suggestion here about what to buy, not where to buy it, that has been covered & this is just my opinion. don't buy stainless, it takes too many btu's to heat up water. titanium is way to $$$. anodized & teflon coated aluminum is the easiest to clean, least expensive & most efficient at turning btu's into coffee.