Really good gravy. Not even going to give instructions for roasting, or frying, or bbq sausages. Nor for mashed potatoes.
The gravy recipe follows

Ingredients

4 T butter
1 onion thinly sliced
4 T flour
1 bottle Guinness beer - or really whatever beer you have.
1 1/2 cups broth (beef, chicken, vegetable, your choice)
1 T Dijon mustard
1 T Worcestershire Sauce
2 T brown sugar
Salt and pepper to taste

Directions

In large skillet, over medium high heat, cook and stir onions in butter about 20 minutes until caramelized.
Add flour. Cook a few minutes until golden brown.
Add beer, broth, Dijon, Worcestershire, sugar, salt and pepper. Reduce heat to low and simmer 15 to 20 minutes.
This recipe made a lot of gravy, but I found it freezes just great