Beer Tap Fraud?

A Wisconsin bar owner was fined $172 for dispensing Coors Light from a Miller Lite tap. He was trying to empty a keg purchased for a wedding, and says he told his customers what he was doing, and no one complained.

I don't know if he's telling the truth or not. But beer tap fraud does exist, and it's not always an accident. When I was working for a local beer distributor, he often sold Carling's Black Label light for his company's light beer. (Both were brewed at a brewery in San Antonio.) Sometimes the bar owner knew, and even instigated it because carling's was cheapere), sometimes he didn't. Certainly, the customers didn't.