Wash. Prepare 4 pint sized mason jars by washing them in hot soapy water. If using two piece canning lids or plastic lids, wash them too.
Thoroughly wash cucumbers, removing the stem and blossom end with a sharp knife.
Make the brine. Whisk together the water, vinegar, and salt in large pot over medium heat. Bring the mixture to a very low simmer, whisking to dissolve the salt. Do not boil.
Prepare the cucumbers. Slice the cucumbers however you like (whole, spears, or chips). For spears, quarter the cucumbers lengthwise. For chips, cut them into ¼ slices with a knife or mandolin slicer.
Pack the jars. Fill with cucumbers, adding 2 sprigs of dill, a garlic clove, ½ teaspoon of peppercorns, and a ¼ tsp. of mustard seed to each jar.
Add the brine. Using a measuring cup or ladle, carefully add hot brine to jars, leaving a ½ inch headspace.
Wipe the rim of the jar with a clean cloth, then place the lid on the jar.
Rest. Let the pickles sit at room temperature for 30 minutes, then place in the refrigerator.
Chill for at least 3-4 days for the best result. This allows the brine to permeate the cucumbers, thus pickling them.
Once you’re ready to enjoy, retrieve your pickles with clean utensils and store in the fridge for up to 1 month.