I've tried Guiness in Dublin and it's not discernably better than that in some pubs in London. Murphy's in Cork on the other hand . . .
If you made a sparkling wine in the UK using the Méthode Champenoise you couldn't call it champagne . . . on the other hand with more than a few years of loving care, you might start to produce something that tastes the same. Just look at how Nyetimber has improved and note also French investment in UK vineyards.
below outlines reasons I was told while visiting there as to why Guinness tastes better Ireland than elsewhere...link to original article I noticed if you want to read up..plenty of other reasons out there including water and method of pouring... The popularity of the drink in Ireland means that kegs aren't sitting around long. Therefore, the Guinness is almost always fresh -- and certainly more fresh than overseas since it doesn't have to travel as far.
The lines are cleaner -- pub owners in Ireland are visited every three weeks by a Guinness representative who flushes the lines to Guinness kegs.
Guinness should be served at room temperature -- an oddity to us who associate the pleasures of beer drinking with its coolness on a hot day. I've noticed that most bars in the States tend to chill their Guinness along with the rest of their beers, which definitely changes the flavor of it.
IMHO, the reason why Guinness tastes so much better in Dublin and many other parts of Ireland has more to do with freshness as it relates to 1) the distance between the brewery and the pub, 2) the amount of Guinness running through the taps on a daily basis which leads to increased turnover of barrels, 3) the pride in the national drink and the landlords taking better care of their pumps/taps/etc. to make sure they're clean, and 4) the fact that you're in Ireland and soaking in the atmosphere (and for many on the forum that means that you're on holiday so beer naturally tastes better then...).
Of course you can find pubs in London and many major cities where care is taken to serve Guinness properly and turnover is high. It's just that you're more likely to find such a pub in Dublin.
Well - a headache, not a hangover (i.e. no tiredness, nausea, general feeling of malaise, nor the hangover type headache ).
Anyway, I can put away 3 litres of Ueli beer without problems (except to my waistline). There's just something about Feldschlösschen that always gives me a headache. Foul stuff.
Makes no difference - Guinness is now delivered in sterile pressurised containers and has been since the 1990's when, for me at least, Guinness died.
Makes absolutely no difference since the introduction of the nitrogen based dispensing system.
Wrong again, the nitrogen dispensing system is only cleaned once every 3 months or more - even in those quaint little O'Shennanigans and the like. Yes, it just sounds wrong doesn't it. My landlord grandad cleaned his pipes every night - he is turning over in his urn as I type.