How to pour the perfect pint of Guinness this St Patrick's Day

Scientists have revealed the perfect way to pour a pint of Guinness this St Patrick's Day.

Unlike a lager or IPA, the key with a Guinness is a two-part pour technique.

For bar and pub tenders, Guinness has devised a different 'two-part' pour.

It advises that the Guinness Draught should be poured into a dry glass at a 45 degree angle until it is around three-quarters full.

Pourers are encouraged to let the bubbles settle before filling it up to the top.