COLOGNE, GERMANY — What is coming, what is staying, and what is new? These questions will be answered at Anuga 2019, the world’s largest food fair that takes place biennially in Cologne. This year’s event, scheduled for Oct. 5-9, marks the 100th anniversary of Anuga and will include commemorative exhibits displaying how so much has changed, as well as stayed the same, since the first exposition was held in 1919 in Stuttgart, Germany.