To provide an elegant alternative to the glut of less-than-healthy food trucks in Chicago, Streeterville eatery e.leaven will set its own mobile food stop to the streets tomorrow. Like the restaurant, the truck will offer fresh, seasonal menu items, such as a light Baja chicken salad buoyed with black beans and creamy ranch dressing and a turkey brie sandwich with crisp apple slices and honey mustard. Most enticing is the short rib “piewich,” which consists of braised short rib and aji chili baked into a doughy shell. Think of it like a portable beef pot pie, without any mess. Follow the new truck’s location via Twitter and Facebook.