Ina Garten hosts an incredible Mary Poppins reunion sharing cooking secrets and making a British-style Sunday lunch for her friends who produced, directed and acted in the new movie. She shows Emily Blunt her foolproof Roasted Capon recipe and Emily shows her how to make her Perfect Roast Potatoes. There's a Roasted Haricots Verts master class for Lin-Manuel Miranda who's helping Hollywood director and producer duo Rob Marshall and John DeLuca mix up Pomegranate Gimlet cocktails. Dessert Meringue Clouds round off a magical Mary Poppins-inspired table setting.