the wedding guests gorged on cod cakes and winter squash , hills of neeps and great round wheels of cheese , on smoking slabs of mutton and beef ribs charred almost black , and lastly on three great wedding pies , as wide across as wagon wheels , their flaky crusts stuffed to bursting with carrots , onions , turnips , parsnips , mushrooms , and chunks of seasoned pork swimming in a savory brown gravy .