(a) As used in this section, “food service establishment” means any restaurant, cafe, cafeteria, soda fountain, hotel kitchen, tavern, industrial feeding establishment, school lunchroom, grocery store, hospital kitchen, nursing home kitchen, and any private, public, or nonprofit organization or institution regularly selling or serving food to the public, or any other place in which food is regularly prepared or offered for sale whether for consumption on or off the premises.
(b) Neither the Department of Health nor any city or county department of health shall continue to classify food service establishments by letter grades on the basis of compliance with state, city, or county sanitary regulations.