Any cake or cupcake is made instantly better with a good smattering of sprinkles. Rainbow, metallic, big, small, they come in any shape and size you can imagine! Before you get sprinkling, here's a little sprinkle 101. Spencer Lawson, with Orson Gygi, shares his expertise on the subject. He shares what sprinkles bleed, which ones don't, and the best application for each different kind.