Sandra Oh is winning - or at least making progress - in a battle with her Grey's Anatomy co-stars. But don't worry, there's no on-set drama.

The Canadian actress is merely trying to convert her co-stars to veganism, treating them to a lunch at her favorite animal-friendly restaurant.

Oh took a bunch of Grey's Anatomy cast and crew members to Truly Vegan in Hollywood earlier this month and wowed them with its cuisine.

A source told Contact Music, "They couldn't believe how amazing the food tasted. Patrick Dempsey enjoyed the chocolate vegan cake and Ellen Pompeo has gone to Truly Vegan half a dozen times since trying the food."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.