The most comprehensive report of cottage food laws around the US that we know of is this August 2013 report from the Harvard Food Law and Policy Clinic. Note that in the last few years there has been a large amount of legislation related to cottage food around the US so some of the information in the report may already be outdated. It's an exciting time for the cottage food industry! Also check out our Food News Blog for more updates about homemade food law and policy in California.