As our region's markets slowly wake up this spring, we begin to encounter all sorts of tempting food. With items like fresh baby spinach sharing space with the last of winter's butternut squash our minds start conjuring up recipe ideas. One of the best ways to make use of fresh Maryland produce is to become adept at making ravioli. Chef Jerry Pellegrino of Schola Cooking School points out, it's no exaggeration to say the possibilities are endless.