According to the current edition of Larousse Gastronomque (p.
194-5), the first cafes (generally defined as places selling drinks and snacks) was established in Constantinople in 1550.
The royal household, with its hundreds of retainers, and the households of nobles, often numbering as many as 150 to 250 persons, also necessitated an efficient foodservice...
In providing for the various needs, strict cost accounting was necessary, and here, perhaps, marks the beginning of the present-day scientific foodservice cost accounting..." ---West and Wood's Introduction to Foodservice, June Payne-Palacio & Monica Theis, editors [Prentice-Hall: Upper Saddle River NJ] 9th edition, 2001 (p.
It was a coffee house, hence the word "cafe." Cafes were places educated people went to share ideas and new discoveries.