Aidan Bowie, who works at the city centre's Blythswood Square Hotel, was put through three rounds of rigorous drinks challenges before being crowned the winner of this year's Auchentoshan Switch contest.
His prize will be to "switch" continents with the North American winner and spend two weeks working in the prestigious Dead Rabbit, in New York.
The 25-year-old will try his hand at making some of the bar's most difficult cocktails over a two-week period when he travels across the Atlantic next year.
Held in London, the competition saw 12 contestants from the UK, Sweden and Germany work under pressure to create cocktails from mystery ingredients before being scrutinised by industry experts.
For the final heat of the contest, two remaining bartenders had to use their skill and creativity to make a Blood and Sand cocktail containing Scotch whisky, blood orange juice, brandy and vermouth.
Aidan said: "It's crazy, I've never done a competition like that before and I didn't expect to get that far.
"The first round was being held in my bar and I wanted to represent it so that's why I entered.
"When I told my mum I had won she was in tears, she was really proud."
The most nerve-wracking part of the contest for Aidan was not making the drinks, but presenting them in front of the judges and an audience.
The North-American leg of the contest will take place next month in New York, with the winner being given the chance to work in London's exclusive Nightjar cocktail bar.
Edmund Weil, competition judge and owner of the Nightjar said: "The Switch finalists showed so much talent and passion in their Auchentoshan Three Wood creations that the judges were blown away. Some difficult decisions had to be made but Aidan just had the edge."