Tossed Spinach Salad

Ingredients

• 1 package (10 ounces) fresh spinach, torn
• 1 pound fresh mushrooms, sliced
• 1/2 pound sliced bacon, cooked and crumbled
• 3 celery ribs, sliced
• 1 cup shredded cheddar cheese
• 3 hard-boiled large eggs, sliced
• 3 green onions, sliced
• 1 cup ketchup
• 3/4 cup white vinegar
• 3/4 cup vegetable oil
• 1/2 cup sugar
• 1 teaspoon salt
• 1 teaspoon Worcestershire sauce