MSM, you use The Rule of 86. The gallons of sap needed to produce 1 gallon of syrup is 86 divided by the % sugar content. For example; 86 divided by a 2% sugar content = 43 Therefore you'd need 43 gallons of sap to produce 1 gallon of syrup. I made up a whole chart so I know what I'm dealing with when faced with sugarless sap or sugary sap. Hope that helps. If I'm totally off with this information, I'm sure someone will be quick to show us the light.












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