This article was pretty informative. I never knew some of these trees were usable.The resulting sap of various trees ranges from 40:1 all the way to 100+:1 (100 gallons of sap make 1 gallon of syrup).27 Trees To Tap For Syrup
Walk into any gift shop in Vermont and you'll find shelves of maple syrup, alongside t-shirts that boast "I'd tap that" with a maple tree front and center. We love syrup, we love tapping, sopracticalselfreliance.com
Bob