Canadian Maple Syrup Boiling the Sap. Maple water is transformed into maple syrup in a sugarhouse, or sugar. The finest syrup can only be made from fresh, clean sap. The. collected sap is boiled down into syrup. The art of sugaring is centered on the evaporator which, fired by wood. From the time. the maple water is poured into the evaporator to the time it turns into. The sap will deteriorate if not attended to quickly. The sap must be. boiled the same day it is gathered, so a hot and steady fire is kept. I certainly do not disagree with you. That said, I will now disagree with you and point out that some molds, particularly certain strains of Aspergillus. How to make Maple Candy Making your own candy may be the best way to satisfy your maple sweet tooth. Mochaccino there. A gallon of syrup will make about 8 Lbs.