This sandwich is typical for the lavish sandwiches one can get
at cafes and restaurants in Copenhagen
Marengo dishes – According to a popular myth, the dish was first made after Napoleon defeated the Austrian army at the Battle of Marengo at Marengo south of Turin, Italy, when his chef Dunand foraged in the town for ingredients (because the supply wagons were too distant) and created the dish from what he could gather. According to this legend, Napoleon enjoyed the dish so much he had it served to him after every battle, and when Durand was later better-supplied and substituted mushrooms for crayfish and added wine to the recipe, Napoleon refused to accept it, believing that a change would bring him bad luck. Marengo dishes are loosely based on the dish Dunand created at Marengo.
A baking recipe inspired by literature found on theguardian.com
They all had dinner – fourteen of them round the immense three-pedestal table extended to its uttermost and even then they were crammed round it. They ate four roast chickens, bread sauce, mashed potato and runner beans followed by plum tart and what the Duchy called Shape – blancmange.
From “The Light Years” by Elizabeth Jane Howard