re: Do you ever use a store bought gravy mix?

I don't know what you would possibly use it for? If it's a sausage white gravy for a chicken fried steak or biscuits in the morning, you can make a perfect white gravy in less than 20 mins. If it's brown gravy for potatoes or to be served over rice then the gravy is already made in the stew pot along with the protein youre cooking.