Spinach Salad

Here's a really good salad from another sister in law (they have all my best recipes). No picture again, but it's salad--what do you want?

lettuce
baby spinach
1/2 lb. cooked crumbled bacon
3/4 lb. sliced mushrooms
3 cups grated Swiss cheese

Toss all together.

Dressing: (pour on at last minute)
3/4 cup red wine vinegar
3/4 cup sugar
1 medium purple onion, chopped
1 1/2 Tblsp. sliced green onion
1 1/2 Tblsp. poppy seeds
1 1/2 tsp. dry mustard
1 cup olive oil

Make the dressing ahead of time and chill in fridge. Pour on at last minute or salad will wilt. Toss well to coat.