Portobellos with Arugula and Parmigiano
Editor's note: The recipe and introductory text are from Mario Batali's book Italian Grilling. Reprinted with permission by Ecco. All rights reserved.
This was one of the first dishes I put on the menu at my restaurant Pó... a long, long time ago. You can vary it by using different greens, such as spicy young watercress, or other cheeses, including sheep's-milk cheese, semi-soft or aged. The beauty of the dish lies in the seemingly incongruous marriage of anchovies and mushrooms: anchovies plus mushrooms equals steak.