Well, Walmart also sells the Wilton brand. It's in the cake-making section of the craft area. Incidentally, Pat Catan's also sells the Wilton brand, and often Lorann flavors as well - right in the same aisle. What I'd like to know is whether there's a real difference between the two as far as quality or something else goes. It sounds to me like it's really just an unknown gamble either way. You either bet on pharmaceutical grade or food grade. Is there sound research to favor either one?
So I just found and read the post about USP and VG. It's very good stuff, but it doesn't necessarily answer whether there is any proof that humco is any safer than wilton brand or vice versa. Again, it seems to me to be just a gamble either way.