Spinach Salad

Dressing:
3/4 C. white vinegar
3/4 C. sugar
1 1/2 T. grated onion
3/4 tsp. mustard powder
1 1/2 T. poppy seeds
1 1/2 tsp. salt
1 1/2 C. oil
* combine all and let chill

Salad:
1 red onion, sliced
1 head lettuce, chopped
3 bunches fresh spinach
3/4 lb. mushrooms
1/2 lb. bacon, cooked and crumbled
3/4 lb. grated swiss cheese
1 C. cottage cheese, add just before serving
craisins
* mix all salad ingredients adding dressing and cottage cheese just prior to serving.
*be sure to drain lettuce very well before putting in salad