Broccoli Salad

2 heads broccoli, chopped
6-8 slices fried bacon, crumbled
1 onion, chopped
shredded Cheddar cheese-optional

Dressing:
1/3 C. vinegar
1/3 C. sugar (or to taste)
1/2 C. mayo

Stir dressing ingredients till smooth. Pour over broccoli and onions. Top with bacon and cheese and toss. Make the day before serving.