I just can't make home-made gravy. DH can, it's lovely and thick and tasty and we use the same method.
I'm not keen on using Bisto. Only for stretching home made gravy out to go further. On it's own it just tastes fake and has a wierd texture, to me.
So come on, own up. If you do a roast for just your immediate family, what type of gravy do you make?