Wash the leaves well and stack them in piles of 10 leaves per pile. Roll each little pile of leaves into a cigar shape. Add the salt to the water in a wide nonreactive pot and bring to a boil. Add the rolls of leaves to the brine, turn off the heat, and, using tongs, place the rolls into a sterilized wide-mouth pint jar, packing it tightly. Pour the brine in to fill the jar