12 cups water
1/2 cup Kosher salt
3 pounds English (seedless) cucumbers, unpeeled (cut into 1/8-inch thick slices, 3 to 4 large cucumbers)
2 cups apple cider vinegar
2 cups Sugar
1 medium yellow onion
1 tablespoon brown or yellow mustard seeds
1 teaspoon celery seeds
1 teaspoon coarsely cracked black pepper
1 teaspoon turmeric