Slice cucumbers into coin shapes (or spears, or cut small cucumbers in half lengthwise).
Add about half of the cucumbers to the jar(s).
Add peppercorns, garlic, and dill. Top with remaining cucumbers and sprinkle with pepper flakes if using.
In a measuring cup or bowl, whisk together water, vinegar, and salt until salt is dissolved. Pour over the cucumbers. Cover the jar and gently shake to combine.
Refrigerate 24-48 hours.
Notes
Nutrition calculated without the brine.
Refrigerate pickles for 3-4 weeks.
Add fresh cukes to the brine for more pickles to enjoy! Only extend use for the 3-4 weeks, then new brine should be used.