Upcycled food is food made from ingredients that would otherwise never have been eaten by people. That could mean the pulp left over after juicing, the grain left behind after brewing beer, or the “ugly” produce that never makes it to a grocery shelf. Rather than sending these materials to landfills, compost, or animal feed, manufacturers transform them into new products for human consumption. The global upcycled food market was valued at $60.8 billion in 2025 and is projected to reach $106 billion by 2035.
How Upcycled Food Is Defined
The Upcycled Food Association, the industry’s main certifying body, defines upcycled foods as products that “use ingredients that otherwise would not have gone to human consumption, are procured and produced using verifiable supply chains, and have a positive impact on the environment.” The USDA uses a similar definition: food created from surplus food, food byproducts, and ingredients that would have left the human food supply chain. Both definitions share the same core idea. The ingredient was headed somewhere other than your plate, and someone found a way to redirect it.
This distinction matters because it separates upcycling from simple recycling or composting. Composting breaks food down into soil. Upcycling moves it up the value chain into something you’d actually want to eat.
Common Ingredients and Where They Come From
Most upcycled ingredients are “side streams,” the leftovers from industrial food processing. Brewer’s spent grain is one of the most widely used. After beer production extracts sugars from barley or wheat, the remaining grain still contains protein and fiber, and it gets dried and milled into flour for crackers, bread, and pasta. Citrus peels left over from juice production are another major source, though they require more careful handling since they can carry residues from agricultural chemicals.
Other common side streams include apple pomace (the skin, seeds, and pulp from cider or juice pressing), potato peels from french fry manufacturing, and whey leftover from cheese production. Broken wheat, grains that crack during milling and get diverted from the food supply, is turned into snack foods. Grape pomace from winemaking finds its way into baked goods. Even avocado seeds, typically discarded by the ton, are being processed into shelf-stable snack ingredients after treatment to reduce naturally occurring compounds that would otherwise be harmful.
The range keeps expanding. Carrot, beetroot, sugar beet, corn, and tomato processing all generate usable side streams, with root vegetable byproducts carrying the fewest chemical safety concerns of the bunch.
Why It Matters for the Environment
Food loss and waste account for 8 to 10 percent of annual global greenhouse gas emissions. That is nearly five times the total emissions from the entire aviation sector. Wasted food also occupies almost a third of the world’s agricultural land, meaning the water, fertilizer, fuel, and labor that went into growing it are all lost too.
Upcycling addresses this problem at the source. Instead of letting byproducts decompose in landfills (where they release methane, a potent greenhouse gas), it captures their remaining nutritional value and keeps them in the food system. The environmental benefit is baked into the certification requirements: to carry the Upcycled Certified label, a product must demonstrate a positive environmental impact, not just use leftover ingredients.
Nutritional Differences
Upcycled ingredients often boost the nutritional profile of the products they’re added to. When researchers replaced a portion of standard wheat flour with flour made from upcycled sunflower meal, the resulting muffins had higher levels of insoluble fiber, protein, minerals, and antioxidants. Cookies made with grape pomace and broken wheat showed increased antioxidant content. Across multiple studies, snack foods made with upcycled ingredients consistently showed improved amino acid profiles, higher fiber and mineral content, or a lower glycemic index compared to their conventional equivalents.
This makes sense when you consider what’s being rescued. Fruit skins and seeds concentrate fiber and antioxidants. Spent grain retains protein. Whey is already recognized as a high-quality protein source. The nutritional gains aren’t a happy accident; they’re a direct result of capturing parts of the plant or product that are naturally nutrient-dense.
How These Ingredients Are Made Shelf-Stable
Turning a wet, perishable byproduct into something that can sit in a package for months requires processing. The two most common methods are freeze-drying and spray-drying, both of which remove moisture rapidly to prevent spoilage. Freeze-drying preserves more of the original nutrients and flavor, while spray-drying is faster and cheaper for large-scale production. Chickpea cooking liquid (aquafaba), for instance, is steamed off during pressure cooking, then degassed and dried using one of these methods to create a shelf-stable egg substitute.
Extrusion is another key technology. It pushes ingredient mixtures through a heated barrel under pressure, producing puffed snacks, cereals, and crisps. Avocado seed snacks, for example, are made through extrusion combined with freeze-drying, which reduces potentially harmful natural compounds to safe levels while creating a crunchy texture.
Safety and Regulation
Upcycled foods in the United States fall under the same FDA and USDA food safety rules as any other food product. There is no separate regulatory framework. Ingredients must be wholesome, safe, and approved under existing federal and state regulations. The FDA continues to oversee food contact materials and antimicrobials used in processing, and has worked with industry to phase out certain chemicals (like PFAS) in food packaging that could contaminate waste streams.
One area that researchers are watching closely is the potential for chemical hazards to accumulate in side streams. A 2025 analysis of nine common raw material byproducts found that citrus peel carried the highest number of identified potential chemical hazards (59 distinct compounds), while root vegetables like beetroot and carrot had the lowest (fewer than 10 each). This doesn’t mean citrus-based upcycled products are unsafe, but it does mean manufacturers need rigorous testing and supply chain tracking, which is one reason the Upcycled Certified program requires verifiable supply chains as a condition of certification.
What Shoppers Actually Think
Consumer awareness of upcycled food is still relatively low, but it’s growing. In U.S. studies, people who learned what upcycling means became noticeably better at identifying upcycled products on shelves, with recognition of upcycled whey and tomato products improving the most after a brief educational intervention.
Price is the biggest factor in purchasing decisions. Across all consumer segments studied, the most common response was “I would buy an upcycled food product if the price was similar to the traditional product.” Even among the most environmentally motivated shoppers, only about 16 percent said they’d pay more. On the other end, just 2.3 percent of all respondents said they wouldn’t buy upcycled food at any price. The takeaway for the market is clear: most people are open to upcycled food, but they aren’t willing to pay a premium for it. Taste, quality, and price still drive the decision more than the sustainability label.
Products You Might Already Be Buying
Upcycled food isn’t limited to niche health food stores. Whey protein powder, one of the best-selling sports nutrition products in the world, is made from a cheese byproduct. Many granola bars contain fruit pieces made from juice pulp. Flour alternatives made from spent grain or sunflower meal are showing up in mainstream baking aisles. Some craft beers are brewed with surplus bread. Even animal crackers and pasta brands have started incorporating upcycled ingredients without necessarily advertising it on the front of the package.
The Upcycled Certified mark, a green logo with a leaf, is the easiest way to identify products that meet the formal standard. But plenty of foods use rescued ingredients without carrying the certification, either because the company hasn’t applied or because the product predates the labeling program. If you’re looking to buy upcycled, checking the ingredient list for terms like “spent grain flour,” “fruit pomace,” or “whey protein” can help you spot them on your own.