Each summer, California’s farms and home gardens yield a considerable harvest of fresh fruits and vegetables, yet nearly 8 million tons of this produce is wasted annually. Home food preservation serves as an effective strategy to minimize this waste and prolong the enjoyment of seasonal harvests. Research-based methods such as canning, dehydrating, food storage, and pickling enable families to safely preserve fresh produce, ensuring that food remains nutritious and free from harmful pathogens.
To advocate for safe home food preservation, the San Diego Master Food Preservers have provided educational outreach at the San Diego County Fair for the past two years. During the 2026 fair, 24 UC Master Food Preserver volunteers dedicated over 800 hours to educate attendees on safe, research-based food preservation practices.
Located in O’Brien Hall, the UC Master Food Preserver booth showcased preserved foods and featured hands-on demonstrations, where visitors could ask questions. Volunteers also offered live demonstrations on the Farm2U Stage, showcasing practical preservation techniques for attendees to replicate at home.
Throughout the fair, approximately 3,340 visitors engaged with the UC Master Food Preserver booth.
More than 100 community members completed anonymous surveys to provide feedback on their experience. Survey results indicated significant increases in knowledge and interest: 98% reported a better understanding of safe home food preservation, 92% expressed a desire to learn more, and 77% stated they were likely to try new preservation methods they learned about.
By raising public awareness and confidence in safe food preservation techniques, UC Master Food Preservers are assisting San Diego County residents in optimizing the use of seasonal produce. Enhanced knowledge of home food preservation has the potential to reduce food waste and prevent serious foodborne illnesses. Through continuous workshops and trusted educational resources, the program empowers community members with essential skills for safely preserving California's bountiful harvest.
