Sweet & Sour Green Beans

Sweet & Sour Green Beans
 
2 slices bacon
1 small onion
1 quart green beans (32 oz.)
1 tablespoon sugar
1/4 cup vinegar
salt
 
Drain beans, reserving 1/2 cup of the liquid. Cut bacon into pieces. Brown bacon and chopped onion lightly. Add 1/2 reserved liquid from beans. Add beans, sugar and vinegar. Salt to taste. Heat through and serve.