Use a really crunchy cucumber to start. Either Persian or Japanese cucumbers. Or a good English cucumber if you can't find the other varieties. Personally, we rarely find good, crunchy "Pickling" cucumbers so we always pass on using them. But if you find or grow nice ones, they'd work great too. We let the cucumber slices sit out overnight covered in paper towels after salting them to help them dry out a bit more and develop a nice crunch. They may look a little too dried out in the morning…