Except for linen used in fabric implements, linen shall not be used in contact with food unless they are used to line a container for the service of foods and the linens are replaced each time the container is refilled for a new consumer and laundered prior to reuse.
Source:
Section 114185, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=114185..