And Poppy....you HAVE to try biscuits and gravy made the "Southern" way. I'll try to PM you a recipe to make the "cookies" (that's such a fun way to think of buttermilk biscuits) and gravy when we get back home from St. Louis.
As to the biscuits and gravy, that's really southern food, not found too often up north - I have had the vegetarian version, but never the sausagey type. There does not seem to be a British version of a biscuit, or 'buttermilk biscuit' if you prefer to differentiate from the British I remember having this same conversation with Gwyn some years ago. (My in-laws love to call biscuits 'cookies' around me, makes them feel down with the American lingo....) It is like a scone, but not really, and not sweet. More of a heavy, flaky roll. Very easy to make, so if you fancy giving it a go, check foodnetwork.com or epicurious and search for recipes.