Check out this public domain film from 1925, showing the process of turning sweet water into maple syrup. I love the yoke that they gentlemen are using, at first I thought it was a broken snowshoe over his head, but upon closer inspection its made similar, but clearly a yoke. It's a neat film as it show the back country way of manufacturing as well as a larger factory setting. I am really digging the concept of hanging a piece of raw pork over boiling anything to keep it from boiling over. I think tonight I am going to rig up a coat hanger with a wad of bacon to my overhead range for some protection. And FYI folks as the film says "All Canadian Maple products are genuine. The law forbids adulteration." Remember that!