On the night before you are serving the roast, put it in the crock
pot. Add the beer and dressing mix. Cover and cook on high heat for an
hour. Reduce the heat to low and allow the roast to cook overnight. Add
the vegetables the next morning. Stir to mix the vegetables into the
roast and liquid. Continue cooking on low heat until you are ready to
serve it. This is not a dish that you can overcook. Serve with dinner
rolls and a salad.