Kaffeeklatsch is one of those oddball German phrases that you occasionally hear and be used.
The definition? It's a group (maybe two, maybe five or six) of people who meet at a corner cafe or coffee house.....for a coffee and to swap gossip.
This could involve housewives, retirees, or guys on the way to work but have five minutes to sip a coffee with an associate.
The term gets thrown around by German journalists a good bit because it's where one or two percent of the German population get their daily opinions over German or international affairs.....or least people believe that notion.