Ina's hosting an incredible Mary Poppins reunion for her friends who produced, directed and acted in the new movie, sharing cooking secrets and making a British style Sunday lunch. She's showing Emily Blunt, the foolproof way to roast a Capon and Emily's showing her how to make Perfect English Roast Potatoes. There's a Roasted Haricots Verts masterclass for Lin-Manuel Miranda who is helping Hollywood director and producer duo Rob Marshall and John DeLuca mix up Pomegranate Gimlet cocktails. Dessert is Meringue Clouds , part of a magical Mary Poppins inspired table setting. It's cooking, lights cameras and fun at the Barefoot barn. Action.