1) Non-alcoholic drink 
Birch sap is the sap extracted from a birch tree, such as a North American Sweet Birch or a Silver Birch. The sap is often a slightly sweet, thin syrupy-watery liquid. The tree sap contains sugars (namely xylitol), proteins, amino acids, and enzymes. Birch sap must be collected during a specific time of the year, depending on the species and geogr...