Have you actually checked your grocery store? Mine sells both iodized and uniodized table salt, in addition to the kosher salt idea that folks have mentioned. I

Have you actually checked your grocery store? Mine sells both iodized and uniodized table salt, in addition to the kosher salt idea that folks have mentioned. I know the OP said that they worried about anti-caking agents in kosher salt and I'm no expert, but I thought they didn't usually have them.