Watermelon rind
“Watermelon rind is almost always tossed out, making for a lot of food waste after the sweet red inside has been consumed,” says Ginger Hultin, MS, RDN, CSO, a Seattle-based spokesperson for the Academy of Nutrition and Dietetics. “Pickling watermelon rind in sugar, apple cider vinegar, and spices like cloves, cinnamon, peppercorns, allspice, and ginger makes for a great, crunchy snack or garnish.”