Here's Your Cuke

If cocktail ingredients could be nominated for awards, cucumbers would dominate the Best Supporting Ingredient category thanks to their clean, subtle taste, malleability, and ability to play well with a range of spirits. But no longer satisfied being sidelined as a go-to garnish—or typecast in a Pimm’s Cup—cukes have become the center of attention this summer in a range of fresh takes on classic cocktails.

According to John Dye, proprietor of...