6 slices bacon
1 cup chopped onions
3 tablespoons distilled white vinegar
1 (15 ounce) can cut green beans, drained
Place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, crumble and set aside.
Saute onions in bacon grease; add vinegar, and saute until onions are tender. Add green beans and cook until heated through. Crumble the bacon on top.