My old man used to drink black velvet, guiness and cider. A pint of mix was mild and guiness, cheaper than a pint of guiness. I went to see Graham Parker at Liverpool Poly. There was a newbee behind the bar. We ordered 4 brown bitters and got pints of bitter with bottles of brown , it should have been half pints of bitter. No matter how busy the bar was, we insisted she serve us all night.