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What is the typical business etiquette when at a dinner or lunch?
If attending a business lunch or other meal, wait for the host to initiate most things - drinking wine, eating and conversation. Make sure to wish everyone Guten Appetit before digging in. When toasting chime in with Prost! or Zum Wohl!, and look other guests in the eyes when clinking glasses. Hopefully, the meal will follow the German toast Erst mach' dein' Sach dann trink' und lach! (First take care of business, then drink and laugh!)