syrup:

1 cup lemon juice (3-4 lemons)
1 cup sugar
5 sprigs mint leaves
1/2 cucumber, sliced

  • combine lemon juice, sugar, and mint in a small saucepan and bring to a simmer
  • stir to dissolve all sugar then remove from heat
  • add cucumber slices, cover, and step for 60 minutes
  • strain into a clean glass jar

pimm’s cup:

1 cup Pimm’s
1 1/4 cups ginger beer
2/3 cup lemon syrup
1/2 cup water
1/4 cup gin
1/4 tsp. salt

  • combine ingredients and freeze in a plastic bag or ice cream maker

source: https://cooking.nytimes.com/recipes/1024473-frozen-pimms-cup