Sipping a cup of Earl Grey, Downton Abbey ’s feisty cook spills on the upcoming third season, a potential romance for her character, posing for German Vogue , and more.   " Downton Abbey : My Tea with Mrs. Patmore,"  in which I sit down for tea with Downton Abbey  star Lesley Nicol to discuss Season 3—which returns to PBS’ Masterpiece Classic  on January 6—and a potential romance for Mrs. Patmore, posing for Bruce Weber, and the Mrs. Patmore doll.   No, Mrs. Patmore cannot cook. It’s a question that is frequently asked of  Lesley Nicol, the 59-year-old actress who plays the uppity cook on PBS’s sumptuous costume drama Downton Abbey .   “There’s a thing in the U.K. called Celebrity MasterChef ,” Nicol says, sipping a cup of Earl Grey tea at the London Hotel in West Hollywood. “I’ve been asked several times to go on that. I keep saying, ‘No, you have to be at a certain level before you even think about that, and I’m not there at all. When you look really hard, I’m doing a bit o...