Cucumbers make a cool addition to any summer salad, and they'll do the same for a cool cocktail. There are many ways you can use cucumbers in a drink, but here's one version that's sure to keep your guests nice and cool. To make a pitcher, muddle together two sliced, unwaxed cucumbers, three sliced limes, one cup of mint leaves, and a half cup of sugar. Add two cups of either vodka or gin and refrigerate. After about an hour, fill the rest of the pitcher with ice, seltzer water and some thick slices of cucumber and serve over ice.