Cosmo's was a restaurant in Landing on the planet Manticore.
Ranked alongside Dempsey's Bar and Regiano's, it was the most expensive, exclusive restaurant, and boasted accurately that no one had ever ordered a dish its chefs could not prepare.
In 1903 PD, Admiral Raoul Courvosier thought that Bernard Yanakov's personal chef could produce the same quality of food. (HH2)
In 1905 PD, Honor Harrington dined there with some of her officers. (HH4)