The portobello is a grown-up cremini, but you'd hardly recognize it. The saucer-sized cap is dense and meaty, with a concentrated, intense mushroom flavor. The portobello's solid, satisfying taste and texture make it the vegetable version of steak. These convenient caps make up the best of the 'bello. Marinate and grill, mount 'em on hamburger buns, or simply slice and sautée.