Macaroni Salad for 100

Ingredients

• 5 to 6 pounds fully cooked ham, cubed
• 5 to 6 pounds macaroni, cooked and drained
• 3 pounds shredded cheddar cheese
• 2 bags (20 ounces each) frozen peas, thawed
• 2 bunches celery, chopped (about 12 cups)
• 2 large onions, chopped (2 to 2-1/2 cups)
• 2 cans (5-3/4 ounces each) pitted ripe olives, drained and sliced
• DRESSING:
• 8 cups mayonnaise
• 1 bottle (8 ounces) Western or French salad dressing
• 1/4 cup white vinegar
• 1/4 cup sugar
• 1 cup half-and-half cream
• 1-1/2 teaspoons onion salt
• 1-1/2 teaspoons garlic salt
• 1 teaspoon salt
• 1 teaspoon pepper