Napoléon was not a Gourmet. When First Consul he said that for to eat :
Bad, it was at Lebrun's home
Great, it was at Cambaceres home
Quick, it was at his home.
He liked eggs (omelettes) and ice-cream. But he liked to eat the soup with the soldier.
You have this link, but in french.
For the Chicken Marengo, it was one of my first post in the forum :
and, pls, don't forget the toast, because Dunand decorated the dish with 'soldiers Biscuits'.
Unless you have soldiers biscuits...