But if something is made of a product (say wheat, which this vodka is) then it also stands to reason that there should be some flavor imparted by the materials

But if something is made of a product (say wheat, which this vodka is) then it also stands to reason that there should be some flavor imparted by the materials it is made with. The definition of vodka as having 'no flavor' is just silly because every vodka out there has a flavor (your tongue knows there's something there), but just generally that flavor is one of bad alcohols that have been poorly distilled.