It is unlawful for any person to engage in the noncommercial canning of salmon, or in the commercial canning of any fish or fish product, meat or meat product, or any other food product for the use of man or animal, the sterilization of which in the opinion of the department requires the use of a pressure cooker or a retort, without first obtaining a license from the department.
Source:
Section 112750, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=112750..