If You See Your Bartender Do This It's An Immediate Red Flag (And Illegal) - Chowhound

Eyeem Mobile Gmbh/Getty Images Having fun at the bar is a must, but you still want to keep a close eye on your surroundings. Beyond leaving your drink unattended, there are plenty of red flags to look out for while at a bar — from dirty glassware to premade mixes of simple and craft cocktails. But there is one practice you might see in a bar that is not just a red flag, it's actually illegal across the country.…