Potato jacket is a type of food dish that consists of a potato, usually a baking potato, that is cut in half and then filled with a variety of ingredients such as cheese, bacon, vegetables, and other toppings. The potato is then wrapped in foil and baked in the oven until the potato is cooked through and the filling is hot. Potato jacket is a popular side dish or snack that is easy to make and can be served with a variety of meals.