I have used this, as well as other brands.......basicly anything that says non toxic food safe is ok by me for me...
http://www.dap.com/product_details.aspx?BrandID=67&SubcatID=27
DO NOT use an exterior grade silicone sealant that contains mildewcide. That crap is toxic, mold won't even grow on it!
I don't have a great fear of the toxiicity of 100% silicone....statistics show an annual breast implant number for the US at 337,000, so perhaps we can double that number
Of those boobies, all are made with an outer silicone layer, and 70% are filled with silicone. I guess what I'm trying to say is I like silicone
I believe Grainger sells a specific silicone sealant for the food industry if that's what you are looking for, but it is like 15 - 20 bucks plus shipping AFAIK.
Oh, and this is the internet...you can find information stating that just about anything is unsafe if you search it out....cheers! IMO, the alcohol we make is far more dangerous than a dab of cured silicone...just sayin.
Here ya go...food grade high temp silicone $6
http://www.emisupply.com/catalog/su5005-food-grade-silicone-clear-103oz-cartridge-p-2283.html