Actually, I usually do use just regular whole milk for the gravy.
Sometimes we use use the evaporated milk though.
I can't stand hot sauce, but I do like the idea of using hot sausage instead of regular though. Yum. I'll have to make some for breakfast soon!
All this talk of biscuits and sausage gravy sounds wonderful. Unfortunately, I can feel my arteries clogging just from reading it! :-)