The state of Wisconsin Department of Agriculture, Trade and Consumer Procection reports that, “Food business startups can be complicated. The most basic statement we can make is that you cannot operate a food business out of your home kitchen. (There is a very narrow exception for home-canned acidified foods if your sales are $5,000 a year or less.) We will be adding information here in the near future to help startup food businesses.
You can find the food safety inspector for your area in this list. Look for the county, and then the township, where your business would be located.”