Place rind in a large nonreactive bowl; stir in water and salt. Refrigerate for several hours or overnight. Rinse and drain well.
In a Dutch oven, mix sugar, vinegar, 2 cinnamon sticks, cloves and peppercorns. Bring to a boil. Add rinds; return to a boil. Reduce heat; simmer, uncovered, 10 minutes or until tender. Discard cinnamon sticks.
Carefully ladle hot mixture into 4 hot 1-pint jars, leaving 1/2-in. headspace. Add a remaining cinnamon stick to each jar. Remove air bubbles and adjust headspace, if necessary, by adding hot mixture. Wipe rims. Center lids on jars; screw on bands until fingertip tight.
Place jars into canner with simmering water, ensuring that they are completely covered with water. Bring to a boil; process for 10 minutes. Remove jars and cool.
Editor's Note: To prepare watermelon rind, remove dark green peel from watermelon rind and discard.
The processing time listed is for altitudes of 1,000 feet or less. For altitudes up to 3,000 feet, add 5 minutes; 6,000 feet, add 10 minutes; 8,000 feet, add 15 minutes; 10,000 feet, add 20 minutes.