After the harvesting process comes the real work of maple sugaring, which is concentrating the sap into delicious maple syrup. Commercial producers use reverse osmosis, and Kinnan says he is ...

We may receive a commission on purchases made from links. It generally takes between 20 and 100 gallons of sap to produce a gallon of pure maple syrup. The exact amount can vary dramatically based on ...

Add Yahoo as a preferred source to see more of our stories on Google. A leaf-shaped bottle of maple syrup beside a dish of maple syrup and a honeycomb wand - Pixel-Shot/Shutterstock North Americans ...