While every school’s priority is to feed students delicious and nutritious meals, their second priority typically lands on their budget. However, one of the biggest impacts to a school’s budget isn’t what they buy, it’s what they waste. Decreasing food waste can feel like a difficult task, but there are very easy practices you can implement that can make a noticeable difference. We spoke to Fred Espinosa, Acquisition and Production Manager with Food and Nutrition Services (FNS) at the San Diego Unified School District, about the successful ways their schools have been able to reduce food waste.
1. Portion Control

Oftentimes, students take milk, never open it and eventually throw it away. Milk is not required. FNS’s Love Food Not Waste team and kitchen staff encourage students to take milk only if they want it. Students who change their mind later can place unopened milk on a share table. Money is saved by reducing food waste at the point of service.
2. Food Recovery
Espinosa emphasizes training staff to appropriately and diligently recover food so that it can be put back into production or donated. Share tables are especially valuable for food recovery because they promote consumption from within the school, whereas food donation involves added time, resources and management of excess food.
With 338 salad bars in their schools, it’s important to educate students to be mindful of how much food they put on their plates. When San Diego Unified’s FNS team studied salad bar participation, an average of 15 to 20 pounds of leftovers per school per day were being discarded. Espinosa learned that some of his staff were filling up the 4” pans during meal service to make them look full and appealing to the kids. To combat this issue, 4” deep salad bar pans were traded in for 2” deep pans, especially for items that weren’t taken as often. This practice of filling salad bar pans to a “tastefully empty” level was instrumental in reducing salad bar leftovers drastically to 5 to 7 pounds per day versus 15 to 20 pounds previously.
ProTip: San Diego Unified’s FNS team made one seemingly small and inexpensive change that helped greatly reduce their salad bar waste. By adding chili-lime seasoning (similar to Tajin) to their bars at their secondary and some elementary schools, they were able to increase salad bar participation.
4. Food Rescue
- Developing a key partnership with Feeding San Diego to identify partner agencies that could pick up from their production kitchens every day.
- Creating a route system that incorporated food delivery trucks to back-haul rescued food to production kitchens or the central warehouse.
- Created a binder with protocols for school kitchens after getting approval from their local health department.
- Met with key kitchen staff to review the procedures and answer any questions
As a result, more than 615,000 lbs. of edible food was kept out of landfills. This equates to nearly 492,600 meals provided to those in need in the San Diego community.
5. Composting
Reducing food waste is a simple and effective way to utilize your resources and budget. When you start to implement these practices, you may be surprised by the impacts. If you’re not sure where to start, contact your local Cambro sales rep to get equipped with the right products to support your goals.
ABOUT THE AUTHOR: ADRIANA DESIDERIO IS THE DIGITAL COMMUNICATIONS MANAGER AT CAMBRO.