Add all ingredients into a shaker and shake vigorously. Pour into glass part-filled with ice, and top with soda water.
Cucumber Shopping Tip
There are three different types of cucumbers: slicing, pickling, and “burpless.” If you're making sandwiches, you might want to try the “burpless” variety which are naturally seedless and are less likely to cause gas.
Cucumber Cooking Tip
Salting your cucumber slices and allowing them to drain over a colander for about an hour will get rid of any excess water and keep your sandwich from becoming soggy.