Instructables

Making Maple Syrup in the Back Yard

Step 3: Boiling the Sap

Picture of Boiling the Sap
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On my cast iron fire pit I place some concrete block spacers and top them with an old refrigerator grate. I boil and boil and boil, continually filling the center boiling pot from the warming pot, until all the sap is gone. To boil down 40 gallons of sap could take 2 full days.
 
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