A guy in town who makes and sells root beer at events gave me 3 bottles of Zatarains root beer extract. Directions call for adding 1 bottle of extract and a packet of beer yeast to 4.5 gallons of water along with some sugar. This makes me wonder if I can(or would even want to) brew a beer with this stuff. Maybe 8-10 pounds pilsner malt and no hops. Any thoughts?