10 awesome ways to use cornstarch (that don't involve cooking) Gourmandize Staff, 07/28/2016 Gourmandize shares Share on Facebook Share on Twitter Pin it Share on WhatsApp Share on Google+ 9/10 Previous Next Polishing silverware Make a paste out of cornstarch and water, and use it to coat silverware that has lost it's luster. Allow the mixture to dry, then remove it with a dry cloth. Give it a quick polish, and you'll be amazed how well it restores your silverware!