In this Wednesday, March 28, 2013 photo, David Moore of the Crooked Chimney sugarhouse checks the flow of his tapped white birch trees in Lee, N.H. Moore, New Hampshire’s only known commercial

... more 

In this Wednesday, March 28, 2013 photo, David Moore of the Crooked Chimney sugarhouse checks the flow of his tapped white birch trees in Lee, N.H. Moore, New Hampshire’s only known commercial birch syrup producer, got his start in 2008, when he was a student at the University of New Hampshire. (AP Photo/Jim Cole) less 

1 / 28
Associated Press
Mon, Apr 1, 2013 10:51 AM EDT