I saw some apple cider in the store, without preservatives. I made a mead with 2 gallons of it, 6 pounds of honey, and topped up with 5-16.9 oz. bottles of water (3 gal.). Initial SG was surprising, as I hit 1.100 exactly (luck)! Should I have made a naked mead, and then sweetened with the cider, or is this acceptable?