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| | Birch Boy Gourmet Alaskan Birch Syrup: Educational Articles |
 | | Birch trees, like many northern hardwoods, have long been tapped for their sugary, invigorating sap; but because of maple's high sugar content, generous sap flow, mellow flavor, and compliant nature, maple became the premier sugar tree in North AmericaÜexcept for Alaska, where birch trees are plentiful and maples are small and scarce. |
 | | Birch syrup from sap with a high sugar content may contain more than 90 percent sugars in the total dissolved solids, and the lower limit of 66 degrees Brix may actually be close to sugar percentage. |
 | | Birch syrup at 70 percent concentration of sugars (78 degrees Brix) is roughly equal in relative viscosity to maple syrup at 66 percent (67 degrees Brix), both measured at room temperature. |
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