Ole Miss. Never put the leaves or berries of mistletoe, poinsettias or holly in or around food. Even kudzu leaves can cause strong allergic reactions in some people. Stick with artificial flowers or the standard cabbage and lettuce leaves to be safe, McCook said. Most hard cheeses, such as cheddar and colby, can be trimmed within half an inch of the mold and still be safe, but never the soft cheeses, said Dr. Diane Tidwell, assistant professor of family and consumer sciences. Toss any raw meat that has turned gray or slimy, too.
Sprouting potatoes are taboo, too, food analysts say.
Sprouting onions are usually edible if they're mold-free, but potato sprouts contain a mild toxin and shouldn't be eaten. Moldy bread, nuts and seeds should be discarded, as well. According to the U.S. Food Safety and Inspection Service, cold salads and similarly prepared foods can be served up to two days later. If properly stored, leftover turkey and stuffing can be served up to four days after cooking. The University of Mississippi.