California’s inspector general found meals that met calorie needs and followed heart-healthy guidelines, along with trash bags full of discarded food. When people skip the menu, many turn to the canteen. The cost can shift to health care, which runs about 10 times as much as food for each person in custody.
In August, California’s Office of the Inspector General published its audit of food programs in state prisons. Auditors visited four prisons and reviewed operations from 2022 through 2024. The findings were really interesting. On one hand, the prisons met the population’s caloric needs. Additionally, the department’s heart-healthy diet, served to about 81% of the people in its custody, follows the 2020-2025 federal Dietary Guidelines. On the other hand, auditors also found food waste at all four prisons they visited.
The clearest example of that waste was pea protein, which staff and incarcerated people told auditors was thrown out more often than other foods. The department added it to menus in July 2023, and the OIG says the change was likely a response to a 2018 state law requiring plant-based meal options. Food managers also chose it to help meet dietary guidelines and protein requirements while limiting sodium and additives.
Given that menus are graded by what they contain, pea protein counted as a healthy addition. Yet a menu’s effect on health depends on what people eat and many people rejected pea protein, and the heart-healthy diet more broadly, in favor of the canteen. In fact, of the 35 incarcerated people auditors interviewed, 33 said they supplement their meals with food bought there.
Uneaten Meals Show Up in Canteen Sales
Pea protein waste is just one example. Staff and incarcerated people told auditors that food the department provides is thrown away in general. At CSP-Sacramento, auditors photographed large trash bags full of discarded food, confirming the survey findings. Many people replace that food going to waste with canteen purchases, and much of what the canteen sells falls outside the heart-healthy plan. As an example, auditors found that one prison’s canteen sold instant noodles with 1,160 milligrams of sodium, more than half the diet’s daily target of 2,300.
The OIG warned that relying on ultra-processed canteen food can raise the risk of type 2 diabetes and heart disease, and that these conditions can increase the department’s medical costs. That’s the risk inside a menu change made for health reasons: if the new item goes uneaten, people may fill the gap with food that works against the goal the change was meant to serve.
The Larger Cost Sits Downstream
Food is a small share of what California spends on each person in prison, about $127,800 a year on average in the 2025-26 budget. The Legislative Analyst’s Office also tracks the costs that rise and fall with each person in custody, and those were budgeted at about $21,500 a year. Roughly three-quarters was health care: $16,291 per person, including $3,125 for pharmaceuticals. Food came to $1,602, so health care ran about 10 times as much.
Neither the audit nor the budget analysis estimates how much of that health care spending, including the $3,125 for pharmaceuticals, traces to diet. Even so, the difference in scale matters. A 10% change in health care spending would roughly equal the entire food line. Conditions like diabetes and heart disease are treated for years, often with ongoing medication, and the department pays for that care.
The Audit’s Fix Is a Measurement
The OIG recommended that the department monitor food waste and adjust menus based on the foods people frequently discard. For plant-based protein specifically, it recommended measuring both the cost of the product and its waste rate, to support a cost-benefit analysis.
The kitchen budget raises the stakes for that waste. During the audit period, feeding one person cost the department an average of $4.85 a day, while each prison received an allotment of $4.45. The state’s current per-person food budget sits in the same range: the LAO’s marginal food figure of $1,602 a year works out to about $4.39 a day. Food that ends up in the trash was paid for out of a budget that has run below what feeding people actually cost.
Picture what that means for a correctional food manager preparing the next 13-week menu cycle. Headquarters wants to know whether the plant-based entrée should stay. The kitchen knows the item comes back in the serving pans and on trays. But it can’t say how much comes back, at which meal, and how that compares with the entrées around it. Without those figures, the decision rests on complaints and impressions.
What California’s OIG recommended on food waste
- Monitor food waste and adjust menus based on foods the population frequently discards.
- Measure the cost of plant-based protein and its waste rate to inform a cost-benefit analysis.
- Educate the population about healthy food choices and address common misconceptions about pea protein.
Turning Waste Into Menu Data
The Operating System for Institutional Foodservice was built to connect what a kitchen prepared to what went unused. In CulinarySuite, production records document the quantities each kitchen prepared for every menu item. During preparation and service, staff enter wasted food in the wastage log, and leftovers held for later use go in the reuse log. Recipes then scale to the forecast for the next cycle.
Over a few weeks, those records show which items are consistently prepared in larger quantities than people take from the line. Food discarded from trays after it leaves the line is a separate measurement, and the kitchen record doesn’t capture it on its own. Even so, a food manager can adjust quantities, change a recipe, or replace an entrée in the next cycle. When a menu change is on the table, the manager can bring figures for each item to headquarters.
Measuring Nutrition at the Table
The OIG asked the department for status updates on its recommendations at 60 days, six months, and one year. The 60-day mark fell on October 9. The six-month update is due in February 2027.
Any correctional system changing its menu to meet nutrition goals faces the question California’s audit raised, which is whether the food gets eaten. When it isn’t, the cost may not stay in the kitchen. It can follow people into the clinic, where care for chronic disease continues long after the menu cycle ends. A system that tracks waste by item can flag a problem item within a single cycle, well before any cost reaches the clinic.
See CulinarySuite in Action
See how production records and wastage logs show which menu items go unused, so the next menu cycle reflects what people actually take.
Frequently Asked Questions
What did California’s audit of prison food programs find?
The Office of the Inspector General’s August 2026 audit of four prisons found that meals met the population’s caloric needs. It also found significant sanitation and hygiene deficiencies at three of the four prisons, backlogged equipment repairs, incomplete temperature and utensil logs, and food waste at all four. It reported that plant-based protein is likely thrown out at a higher rate than other foods.
Can food waste in prisons affect health care costs?
When people skip prison meals, many turn to canteen food, much of it ultra-processed. The OIG warned that this can raise the risk of type 2 diabetes and heart disease, which can increase medical costs. In California’s 2025-26 budget, the per-person costs that change with each person in custody include $16,291 a year for health care, about 10 times the $1,602 for food, according to the Legislative Analyst’s Office. Neither the audit nor the budget analysis estimates how much of that spending traces to diet.
How does CulinarySuite help correctional food managers reduce food waste?
CulinarySuite production records document the quantities each kitchen prepared for every menu item, and its wastage and reuse logs record what went unused during preparation and service. Together they show which items are consistently overproduced or left in the serving pans. Food managers can adjust quantities, recipes, or the menu in the next cycle based on item-level records.
The foodservice industry has software. We built the OS.
Culinary Digital helps nourish more than 2.5 million people every day across institutional dining programs nationwide.
This article is provided for general information about public audit findings and budget data and does not constitute legal, regulatory, or compliance advice. Figures are drawn from the cited public sources and may change. © 2026 Culinary Digital. All rights reserved.
