Haven't you read up on Sassafras?? It is Cancer Causing Everything of it causes Cancer, the leaves, wood, sap, smell, just looking at it!
Aside from that there smirking about what all is said about Sassafras....why wouldn't the sap be good to use for tea or soda in a recipe? If you boil the roots to get the sap/taste out of them to make tea or soda, why wouldn't the sap work??