In a homemade evaporator, gallons of sap are boiled all day long at the end of February. About 40 gallons of sap boil down to 1 gallon of pure maple syrup. Matt Lockwood, Susan and Mark's son ...
Photograph by Randy Duchaine, Alamy Stock Photo Pat LeClaire pours freshly made maple syrup from an evaporator into a beaker to measure its density. Fresh maple syrup comes out of the evaporator ...