Chill your base. Pop the Pimm’s and your mixer (lemonade or ginger ale) in the fridge for at least an hour. Cold ingredients mean less melted ice and better flavor.
Slice the produce. Thinly slice the orange and cucumber. For a pretty touch, use a vegetable peeler to create cucumber ribbons.
Lightly bruise the mint by clapping it between your hands.
Build the pitcher. Fill a large pitcher halfway with ice. Add the orange slices, cucumber, mint, and lime if using. If you’re adding strawberries, tuck them in now.
Pour in the Pimm’s. Add 1 cup Pimm’s No. 1 to the pitcher.
Top with bubbles. Add 2–3 cups chilled lemonade or ginger ale, depending on how strong or sweet you prefer the drink.
Stir gently to combine without knocking out all the fizz.
Taste and adjust. If it’s too bold, add more mixer. If you want more brightness, squeeze in a little fresh orange or lime juice.
Serve right away. Pour into ice-filled glasses, making sure everyone gets some fruit and cucumber. Garnish with a fresh mint sprig.