4 slices bacon
1/2 small onion, diced
1/4 cp vinegar (dilute with water if too strong)
1 tbsp sugar
1 tsp salt

Instructions

1 - Fry bacon until crisp, ad onions and cook until tender but not brown.
2 - Add remaining ingredients.
3 - Heat and pour over salad ingredients.
4 - Good on wilted lettuce or spinach.