Well I got some sap and have boiled 2 batches on my stove but not that the sap is running I am looking for a way to speed up evaporating. I grabbed my dads deep frier and started a 5 gallon batch at about 7p.....fast forward to 10p and I only boiled about 3 gallons away and used about 1/2 tank of propane. Now I am thinking about utilizing my fire pit and boil on an open flame. I have heard that some types of metal pans can taint the flavor....what type of pot should I buy to boil or can I just use the deep frier pot? Thanks for the help.