The Reuben or Reuben sandwich is a grilled or toasted sandwich made
with corned beef, sauerkraut, Swiss cheese, and Russian dressing. It is
typically made with rye bread though originally it may have been served
on pumpernickel bread.
The origins of the Reuben are contested. One account holds that
Reuben Kulakofsky (sometimes spelled Reubin), a grocer from Omaha,
Nebraska, was the inventor, perhaps as part of a group effort by
members of Kulakofsky's weekly poker game held in the Blackstone Hotel
from ca. 1920-1935. The participants, who nicknamed themselves "the
committee," included the hotel's owner, Charles Schimmel.