The Basics of a Great Roast Chicken. Mrs. Patmore shows us that one role of experienced cooks is to share their skills with those who want to learn, so that they can become the next generation of Downton Abbey cooks. If you are a Mrs. Patmore, teach a willing student. If you want to learn, find a Mrs. Patmore. Here are my own tips for making a great roast chicken dinner. Do take the time to share your own with those you love.