Since it's too cold and windy to be outside manning my boiling apparatus (propane "turkey fryer" style) and I had a couple of gallons of leftover partially boiled sap from yesterday's meager production, I decided to put my pot on top of my wood stove to see if I could use some of the "free" heat to continue the cooking process. My stove is a small unit whose top never gets hot enough to boil (a safety feature?). The pot of water I keep on it (just to add a bit of humidity to the house) slowly evaporates and occasionally almost gets to a simmer if I crank the stove hard. Anyway, is there any concern with using such a slow non-boiling evaporation method for sap? The temp is around 180° or so. I'll finish the syrup on my kitchen range top, as always.