- Dressing
 - 1 onion, minced
 - 2/3 cup white sugar
 - 1 tablespoon dry mustard
 - 1 teaspoon celery seed
 - 1 teaspoon black pepper
 - 1/2 cup distilled white vinegar
 - 1/2 cup olive oil
 - Salad
 - 1 head romaine lettuce, chopped
 - 1 (10 ounce) can mandarin oranges, drained
 - 5 ounces fresh mushrooms, sliced
 - 3 tablespoons slivered almonds
 - 3 tablespoons crumbled cooked bacon
 
- Place the onion, sugar, mustard, celery seed, and black pepper into a small bowl. Pour in the vinegar, and stir until the sugar has dissolved. Whisk in the olive oil until the dressing is thick. Cover, and refrigerate at least 3 hours.
 - To make the salad, toss the lettuce, oranges, mushrooms, almonds, and bacon together in a large bowl. Drizzle with the dressing, and toss again to coat.