Step 1: Wash cucumbers thoroughly. For extra crispness, soak them in an ice bath for 1-2 hours. Trim about 1/16 inch off the blossom end of each cucumber, as this end contains enzymes that can soften pickles. You can leave them whole or slice them into spears or rounds.
Step 2: Prepare your canning equipment. Wash seven 1-quart canning jars, lids, and bands. Sterilize the jars by boiling them for 10 minutes or running them through a hot cycle in your dishwasher. Keep them hot until ready to fill.
Step 3: In a large non-reactive pot, combine the white vinegar, water, and pickling salt. Bring the brine mixture to a rolling boil over medium-high heat, stirring until the salt is completely dissolved. Reduce heat and keep the brine simmering.
Step 4: Into each hot, sterilized quart jar, add 2 heads of fresh dill (or 1 tablespoon dill seed), 2 halved garlic cloves, 1-2 dried hot peppers (if using), 1 bay leaf, 1/2 teaspoon mustard seeds, 1/2 teaspoon black peppercorns, and 2 small grape leaves (if using).
Step 5: Pack the cucumbers tightly into the jars, leaving 1/2 inch of headspace (the space between the top of the cucumbers and the rim of the jar). For spears, stand them upright. For whole cucumbers, layer them carefully.
Step 6: Carefully ladle the hot brine over the cucumbers in each jar, ensuring the cucumbers are completely submerged and maintaining 1/2 inch of headspace. Use a non-metallic utensil (like a chopstick) to remove any trapped air bubbles, adding more brine if necessary to maintain headspace.
Step 7: Wipe the rims of the jars clean with a damp cloth. Center a new, clean lid on each jar, then screw on the bands until fingertip-tight (firm but not overtightened).
Step 8: Place the filled jars onto a rack in a boiling water canner. Ensure the jars are covered by at least 1-2 inches of water. Bring the water to a rolling boil. Once boiling, process quart jars for 15 minutes (or pint jars for 10 minutes), adjusting for altitude if necessary (add 5 minutes for every 1,000 feet above sea level).
Step 9: Carefully remove the jars from the canner using jar lifters and place them on a towel-lined surface or cooling rack, leaving space between them. Let them cool undisturbed for 12-24 hours. Do not overtighten the bands after processing.
Step 10: After 12-24 hours, check the seals. The center of the lid should be concave and not flex when pressed. If any jars haven't sealed, refrigerate them and consume within a few weeks. Remove the bands (they can rust onto the lids and cause seal failure), wipe jars clean, label them with the date, and store sealed jars in a cool, dark place for at least 3-4 weeks to allow flavors to meld before enjoying. Once opened, refrigerate.