Master Food Preservers are agents of the University of California and work through the UC Cooperative Extension to educate the community on the safe practices of food preservation, including pickling, making cheeses, sausages, preserves and much more. This website is designed to help you find information about food safety and information about your local Master Food Preservers. Questions About Food Preservation? Need a speaker for your organization? Interested in attending a food preservation class? Call the hotline. If you have a food safety or preservation question, please call and leave a message. We will be happy to return your call.