The fat your grandmother fried chicken in is having a moment. Beef tallow, once pushed out of American kitchens by cheaper seed oils, is back on grocery shelves, fast-food menus and wellness influencer feeds, and the comeback has as much to do with culture as it does with cooking. Driving the revival are three overlapping forces. The MAHA (Make America Healthy Again) movement has branded beef tallow as “real food” uncorrupted by corporate agriculture. Wellness influencers are aggressively vilifying seed oils as inflammatory and highly processed. And fast-food chains, long associated with veget...