Instead of throwing rinds in the trash, throw them in a jar instead and pickle them for a tasty treat. Skeptical? Don't knock this waste-free tip before you've tried it! Pickled watermelon rinds ...
With watermelon rind, what you get is pickles. In Russia, German immigrants used to pickle whole watermelons, rind and all. At some point, many cooks started leaving out the rind and just pickling ...