Wikipedia
United Kingdom
A baked potato is sometimes called a jacket potato in the United Kingdom. The baked potato has been popular in the UK for many years. In the mid-19th century, jacket potatoes were sold on the streets by hawkers during the autumn and winter months. In London, it was estimated that some 10 tons of baked potatoes were sold each day by this method.[12] Common jacket potato fillings (or "toppings") in the United Kingdom include grated cheddar cheese, baked beans, tuna mayonnaise, chili con carne and chicken and bacon.
Baked potatoes are often eaten on Guy Fawkes Night; traditionally they were often baked in the glowing embers of a bonfire.[13]
France
A baked potato is called "pomme de terre au four" in French. It may be served as an accompaniment to a meat dish, or, in a fast-food restaurant called a "pataterie", be the centre of a meal.[citation needed]