Every time the sap cools off the syrup gets darker. Next year he might consider a smaller pan to go on top of what he has now, to add the sap and preheat it. I'm sure that what he's making tastes just fine though, and while the highest grade syrup is the lightest color, a lot of people prefer the darker grades. At any rate it's a lot of fun to make and good on some vanilla ice cream or 'most anything else. :licking: