WINSTON-SALEM, N.C. — We are just days away from the big feast with the family. As you get ready to cook for Christmas dinner, you might want to have a plastic bowl lined with parchment paper around.

Brits are being warned not to turn their kitchens into grease traps this Christmas after a stomach-churning sculpture of a festive feast made entirely from fat was unveiled. The nauseating “grease-mas ...