1 bag spinach, washed and trimmed
1 red onion, thinly sliced
1 can mandarin oranges, chilled and drained
1/2 c. red wine vinegar
1 c. cooking oil
1/4 c. sugar
1 tsp. salt
1 tbsp. dry mustard
1 tbsp. grated onion
1/2 tbsp. poppy seeds

Drain oranges. Tear spinach and combine with red onions and oranges. In blender combine all other ingredients but poppy seeds. Blend at high speed until creamy. Add poppy seeds. Pour dressing over salad. There will be some extra dressing.