Blackberries are reliably stocked at all Charlotte chains year-round, but St. Germain liqueur—an elderflower cordial—requires a trip to a dedicated spirits retailer; most grocers don't carry it, adding real friction to a cocktail that should be quick. The 2-minute claim is honest for mixing, though you'll need five minutes if you're muddling fresh mint and blackberries. Cost per serving sits around $4 to $5 for the spirit pour alone, not counting the fruit, which makes sense for a special-occasion drink rather than weeknight routine. The drink itself is bright, balanced, and worth the effort for entertaining, but budget the liquor-store detour and understand it's a one-glass, same-night project.