Patio Salad

Ingredients

• 1/2 cup vegetable oil
• 1/2 cup lemon juice
• 1 teaspoon sugar
• 1 teaspoon dry mustard
• 1 teaspoon Worcestershire sauce
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 2 cups sliced mushrooms
• 1 cup pitted ripe olives, sliced
• 2 tablespoons parsley, minced
• 2 tablespoons green onions, minced
• 1/2 lb smoked sausage, coarsely chopped
• 1 head lettuce, shredded