The FDA may be phasing out artificial trans-fat for good, but that doesn’t mean the artery-clogging ingredient isn’t still lingering in supermarkets, bar kitchens, and your pantry. Until 2018, when the market is expected to be 100 percent trans-fat free, Leslie Bonci, a sports nutritionist at the University of Pittsburgh Medical Center says you should avoid the fat known to up your bad cholesterol and lower your good. “It’s going to take some time until [trans fat] is out of production completely,” she says, adding the toxic substance isn’t always obvious to identify in certain foods — like those without nutrition labels. “You definitely can’t tell by looking at something whether or not it has trans fat. It takes some work.” Your best bet is to ask restaurants or bars about their ingredients, but here are a few red-flag foods — labeled and unlabelled — to be wary of while the fatty acid makes its exit.