Muddle together sugar, lime wedges, cucumber and mint. Once juices have all released, pour in gin and shake in a cocktail shaker.
Pour gin mixture over of cup full of ice. Top with club soda and stir well. Stir well, sugar doesn't always melt very easily. Garnish with mint leaf and lime.
Recipe by Talia Bunting at https://www.taliabunting.com/memorial-day-cocktails/