Cook bacon in a large skilled until crisp; remove. Crumble and set aside. Add onions to bacon drippings; cook slowly until tender. Remove and set aside.
2
In a pie plate, thoroughly combine flour, salt and pepper. Coast liver with seasoned flour. Sauta liver quickly in same skillet over high heat, taking care not to overcook and toughen meat.
3
When liver is still pink in center, add wine vinegar; stir gently.
4
Remove to serving platter and top with crumbled bacon and onion rings. Spoon wine vinegar glaze over each serving of liver.