Spinach Mushroom Mandarin Salad

Ingredients

• 2 tbsp. Dijon mustard, extra strong
• 3 tbsp. red wine vinegar
• 2 tbsp. water
• 1 cup vegetable oil
• dash Worcestershire sauce
• 2 large bunches well-washed spinach, torn in pieces
• 3/4 cups mushrooms, sliced
• 1/2 cup mozzarella cheese, grated
• 1/2 cup chopped egg
• 1/2 cup mandarin oranges, drained (from can)
• 1/4 cup pine nuts