Ingredients:

1/4 cup white wine vinegar
3/4 cup olive oil
2 tsp grated orange peel
1 Tblsp sugar
1/2 cup orange juice
Juice of 1 lemon
1 medium size red onion, cut into rings
1/2 tsp dry mustard
1/2 tsp salt
2 avocados, diced
2 (11 oz) cans mandarin oranges, drained
1/2 head red lettuce
1/2 head romaine

Mix all ingredients except avocados, oranges and lettuce in a jar with a lid. In a large serving bowl, combine avocados, oranges and lettuce (torn into bite sized pieces). Shake dressing well and pour over salad, serve immediately.