My homemade bud bottle alcohol stove takes one ounce of fuel to boil two cups of water. For last season's high hunt, I added up the amount of water needed for the menu my daughter and I had planned. We needed 12 cups of boiled water for cocoa, coffee, and mountain house. I brought 12 oz. Of alcohol in an empty water bottle. You don't need a metal fuel bottle for alcohal. A light plastic bottle works great.