Concerns over this chemical came to a head in 2012, when there was so much backlash over ammonia-treated “finely textured beef” (aka “pink slime”) that it was taken out of school lunches. Regardless of the fact that you probably don’t like the idea of ingesting a product more commonly used to clean floors, research shows ammonia in beef is safe. Ammonia may also show up in small amounts in peanut butter, chips, and other foods, and the truth is, processed foods contain all sorts of gross-sounding ingredients that have been deemed safe by the FDA and USDA. Here’s a rundown.
Human or hog hair, or duck feathers
Suslik1983/Shutterstock Mass-produced baked goods often contain L-cysteine, an amino acid that helps strengthen the dough. Sounds innocent enough, but you might want to pay attention if you’re vegan. Most of the time it’s made from duck or goose feathers, though some companies have used human hair, or pig bristles and hooves. L-cysteine can be made synthetically, but it’s expensive, so you might want to call up a company if you’re worried about animal products. Don’t miss these disgusting (and dangerous) things you didn’t know you were eating.