This weekend is going to be a big weekend for Guinness drinkers. The Cheltenham Festival runs until Friday and it is expected that spectators will sink over 200,000 pints of Guinness there. And, of course, Friday is also St Patrick’s Day where around 13 million pints are expected to be sold worldwide.

But, what is with our obsession with the Black Stuff? And what makes a good pint?

Darragh Curran, The Guinness Guru, joined Sean to discuss…