Raiding the larder for Sunday potroast

A local grocery store was selling good roasts for $1.99/pound - not bad! I decided it was time for a Sunday roast, an old tradition in my family growing up.

But when I looked in the pantry yesterday, I realized I didn't have any decent can of soup to help me make the gravy in the pot. Usually I would use a Golden Mushroom, or even a powdered Onion Soup packet. What to do?
I have everything in my kitchen to make a delicious roast: bay leaves, fresh rosemary, a carrot, bouillon cubes, garlic cloves, wine, salt and pepper. I cut two gashes in the top of the roast and pressed a garlic and a sprig of rosemary in each one, to help the flavors seep in. I'll let you know how it turns out!