Guinness is a good drop.

squawker wrote: »

why do pubs still do the two pint pour?

the low cask / high cask system of pouring a pint just doesn't exist anymore

is it now just a case of tradition?

squawker wrote: »

but its not, nitro in the barrels is regulated and its all from the same batch

the two pint pour is irrelevant these days

Taken from

http://allaboutbeer.com/man-invented-nitro-guinness/

To give you a sense of what they were trying to replace, here’s how Martyn Cornell describes Irish Guinness in Amber, Gold, and Black:

“In the pub, the casks containing this highly conditioned beer were known as ‘high,’ while casks containing maturer, less lively beer were know as ‘low.’ Publicans would fill glasses three-quarters full from the ‘low cask’ and then top them up with foaming beer from the ‘high cask.’ The ‘high’ and ‘low’ cask system was in use until at least the 1960s.”

Ash recalled this himself. “The barman would take a whole minute to fill one glass. He had to get a low pressure cask over a period of time and then the high pressure one, and he had to mix them. He had to be very skilled, the Irish publican, because it took a minute to get a glass. Every barman had his own process. It was all very amusing.”