Spring 44 Vodka is made from what they describe as a "proprietary blend of American-grown grain." It is filtered through a special "virgin coconut" carbon (charcoal) process (we don't quite know what a "virgin" coconut is (anyone heard of a sullied coconut?) but we guess it suggests not having been used in any other filtration process). They note that there is not one drop of "municipal" water in the vodka but 100% Rocky Mountain artesian water.