This recipe is from The Publick House in Brookline, Massachusetts. The cheeses mentioned are only suggestions made by Chef Brent (he has even added blue cheese at a customers request although he claims not to like blue cheese but it works well if you like it). Any combination of cheese may be used -- use your imagination or taste buds). He also suggested adding other ingredients such as peas, tuna, sausage and other diners have suggested broccoli, onions, etc. So you see, this is quite a versatile recipe.