1 (10- to 15-ounces) package fully cooked chicken sausages (4 or 5 links)
1 large onion (1/2 pound)
halved lengthwise
then thinly sliced crosswise
1/3 cup cider vinegar
3 tablespoons unsalted butter
Instructions
Season cabbage wedges with salt, then steam in a steamer rack set over boiling water, covered, until tender, about 15 minutes.
While cabbage is steaming, cook bacon in a 12-inch heavy skillet over moderately low heat, stirring occasionally, until crisp-tender, about 12 minutes.
Transfer bacon with a slotted spoon to a plate and reserve rendered fat in a small bowl.
Wipe out skillet with a paper towel and return 3 tablespoons bacon fat to skillet.
Cut sausages in half lengthwise and cook, cut sides down, over moderately low heat until browned and heated through, about 7 minutes.
Transfer sausages with tongs to a plate and keep warm, covered.
Add onion to skillet and cook over moderate heat, stirring occasionally, until beginning to soften, about 6 minutes.
Add sausages and bacon and cook, stirring, until heated through.
Add vinegar and remove from heat, then stir in butter.
Serve cabbage wedges topped with sausages, onion, and sauce.