Spinach Salad

I was given this recipe by a teacher friend, Dawn Wasden.

3/4 c. wine vinegar

1 1/2 c. oil (I didn't use this much)

3/4 c. sugar

1 t. dry mustard

1 T. poppy seeds

1/2 t. salt

1/2 pound sliced fresh mushrooms

1 red onion, sliced super thin

6 slices bacon, cooked crisply and broken

1/3 pound swiss cheese, grated

2 bunches spinach, chopped

lettuce, chopped

Blend first six ingredients, then add mushrooms and sliced onions. Marinate in fridge overnight. Pour over bacon, cheese, spinach and lettuce. Toss well.