In your Dutch Oven over medium-high heat, heat the olive oil. When olive oil is hot, add the sausages and brown them, turning the sausages frequently to assure all sides are evenly browned.

Once sausages are browned, add the potatoes, sliced onions, chopped garlic, sweet peppers, and sage, stirring gently until onions are cooked.

Add 1 cup of dark beer and let bubble for 5 minutes to glaze the onions.

Reduce heat to low, cover pot, and let simmer for 45 minutes (checking liquid level on occasion and add additional beer if necessary).

Remove from heat and add fresh basil, salt, and pepper; gently stir in.

Cover with lid and let sit for 5 minutes before serving.