Pimm's Cup  2 oz. Pimm's Cup No. 1 1 tsp. Cointreau 2 oz. fresh lime juice 1 tsp. sugar syrup Lemon-lime soda 2 thin cucumber slices Lime slice Combine sugar and lime juice into chilled collins glass. Fill with ice cubes. Add Pimm's and Cointreau. Fill with lemon-lime soda and stir gently. Garnish with cucumber and lime.