In my experience you won't find quality food grade hose at any all purpose hardware store. For this stuff you have to find a supplier who deals in hoses.
I'm willing to bet that you have all the tools you need to find said supplier in your area at your fingertips; a phone and a phone book. Alternatively, a phone and Google. It's unlikely that anyone on this forum is going to miraculously popup with an answer, so go find the answer for yourself. Louisville is a city of at least a quarter million people; surely there are a few hose suppliers around.
When I needed high-temp silicone hose in Tucson I started off by calling several industrial hose suppliers. From every outfit that didn't have what I needed I requested a recommendation for another shop to try. 4 or 5 calls into it I was put in touch with a hose supplier in town who deals with industrial, medical, and food grade hoses and sold me 3/8 inch ID food grade high-temp silicon hose for under 2 dollars a foot. They had it in stock and had it ready for me the same day.
Good luck!