UCCE Master Food Preservers of San Joaquin County

"To teach research-based practices of safe home food preservation to the residents of California."

Who We Are

The Master Food Preserver (MFP) program is a public service community outreach providing up-to-date information on food safety and preservation. 

Find out more about us or more about becoming a Master Food Preserver, click here.

Spicy Tomato Jam & Herb Seasoned Tomatoes

Click here to register

August 17th
10 am - 2 pm

The tomato harvest is in full swing during the later summer months, and in our region we are fortunate to have full and easy access to this incredible and versatile fruit.

Whether you buy tomatoes at a local fruit stand or market or have an abundance in the garden, there are many ways to preserve tomatoes. Don't miss out on this months class. We are making Spicy Tomato Jam and Herb Seasoned Tomatoes.

Registration begins at 9:30 am, class begins promptly at 10 am. Please wear comfortable shoes and bring an apron. If you have long hair, please bring something to pull it back with.

Classes are held at the Robert J. Cabral Agricultural Center, 2101 E. Earhart Ave., Stockton, CA 95206 in the Calaveras Room.

If you need assistance or accommodations, please contact the UCCE Master Food Preservers of San Joaquin County at 209-953-6100.

Why Preserve Food?

Food spoilage is the process of food becoming unsafe or unacceptable for human consumption. Spoilage is normally caused by the growth of microorganisms in foods. Other losses in quality are caused by natural activities in fresh food tissues, for example, the excessive softening in overripe fruit caused by fruit enzymes. Spoilage and quality losses are partially or completely controlled in properly preserved foods.  Food preservation is the maintenance of safe and nutritious food for an extended period of time. Examples of preserved foods include properly packaged refrigerated, frozen, canned, and dried products.

Objectives of food preservation:

• The primary objective of food preservation is to prevent food spoilage until it can be consumed. Gardens often produce too much food at one time—more than can be eaten before spoilage sets in.

• Preserving food also offers the opportunity to have a wide variety of foods year-round.

• It’s economic. The motivation for preserving fresh foods, whether from the garden, farm, or market, often includes saving money as well as satisfying personal preferences. There are many variables, however, that affect the cost of home-preserved foods. The true costs include total supplies, equipment, fresh food, human energy, and fuel energy to process and store food.

mfp logo

Event Name Date
Newsletter sign up
August class - Spicy Tomato Jam and Herbed Seasoned Tomatoes
Preserving Peaches & Growing and Preserving Berries
Growing and Preserving Berries - Free workshop
Informational Meeting for Becoming a Certified UCCE Master Food Preserver
June workshop & MFP Training Applications
Spring MFP Newsletter
Strawberry Heaven - Lets make jam!
Repeat Tomato Workshop
March Workshop - Fermentation 101
February Workshop - Pressure Canning
January workshop - Lemons
Jan-March 2019 Newsletter
Gifts from the Kitchen
October & November Events - Master Food Preservers
Sign up for our September pickling class!
2018 Master Food Preserver Training Deadline
July Peach Workshop Register Today!
Summer MFP Newsletter
Master Food Preserver Training for 2018
June Jams & Jellies Workshop
June Master Food Preserver Workshop
May workshop Spaces still available for this Saturday!
Master Food Preserver Training for 2018
May workshop
Spring Open Garden Day
April workshop registration is open
February Master Food Preserver workshops
MFP's will have 4 classes at the 2018 Smart Gardening Classes
January Workshop - Lemons
November workshop - Go Nuts!
October Workshop - Olive'toberfest
Fall 2017 Newsletter
MFP September Class - Pie Filling!
Tasty Tomatoes
Summer Newsletter
May workshop (Jams & Jellies) and Training Application Extension!
FREE - April Canning Basic Workshops
Preservation Notes from the Northern San Joaquin Master Food Preservers
Applications are now being accepted for the 2017 MFP training
Dehydrating Basics
Freezer Jam & Lemon Curd workshop - NSJ Master Food Preservers
POMEGRANATE Workshop - Master Food Preservers
Perfectly Pickled - Master Food Preserver Workshop
Basics of Dehydrating Workshop
Versatile Tomatoes - Master Food Preserver Workshop
Appetizing Apricots - Master Food Preserver June workshop
Appetizing Apricots & Seasonal Tips
Cherries Jubilee - Master Food Preserver May Workshop
April Workshop - Pressure Canning
March workshop - Fermentation
2016 Master Food Preserver Training!
Christmas in a Can
Master Gardener Smart Gardening Conference with the Master Food Preservers
Tomatoes!! August Master Food Preserver Workshop. Space is filling up!
Colorful Pickles - July Workshop
Jams & Jellies -UC Master Food Preservers July Newsletter
UC Food Blog