I’m afraid I can’t guarantee they’ll have what you like, but it’s a lovely wee shop nonetheless.
Easiest way to get there I would think is to get the subway to Hillhead, turn right when you leave, turn right at the Pret A Manger, cross the street and it’s the tiny wee lane with a place called Cafe GoGo and Zizzi’s. It’s up the staircase at the end of the lane.