Guinness has launched an alcohol-free version of its stout after a four-year project to replicate the taste of the original black stuff.
Guinness 0.0 is a response to the growing consumer appetite for non-alcohol, lower-calorie beverages.
The product was developed by a team at St James's Gate.
Aisling Ryan, one of team's lead brewers, said "hundreds and hundreds" of versions were tried until they finally landed on one they were happy with.
"It's been a long time in the making," she said.
"We've been working on this for over four years now, so it's really exciting to finally get it outside the gates."
The early stages of the brewing process mirror those of standard Guinness, with the same main ingredients of water, barley, hops and yeast.
The key difference is the addition of a cold filtration stage at the end to remove the alcohol.
Ms Ryan said finding a way to take out the alcohol in a "gentle way" without using heat was crucial in maintaining the Guinness taste.
"Removing alcohol can be quite harsh and a lot of non-alcohol beers out there compromise on flavour," she said.
"It's not easy when you take away the alcohol to be left with a beer that has the quality we deem essential at Guinness.
"We knew from the start we didn't want to put the beer under any thermal stress or to heat treat it to remove the alcohol.
"We looked at a lot of technology solutions and we're really happy with the result."
Guinness said the feedback from independent taste tests has been a lot better than expected.