Watch how to make one of Chef John's favorite classic comfort foods. First saute mushrooms and shallots in butter, then add flour to make a roux. Add colorful diced peppers and stir to coat with the roux. A splash of sherry wine deglazes the pan before chilled chicken stock is added and the heat is raised to a simmer. Season and simmer some more until the mixture starts to thicken. Stir in cooked chicken and serve over your favorite pasta (or potatoes, or rice, or toast) as soon as it's heated through. It's every bit as delicious and comforting as it looks! Get the recipe for Chef John's Chicken a la King.