Zesty Tuna Cooler

Ingredients

• 1 small size pkg shell pasta
• 3/4 cup celery, chopped
• 1/4 cup onion, chopped fine
• 1/4 cup green pepper, chopped
• 1 small size can tuna
• 1 small size can peas
• 1 small size can mushrooms
• 1 1/4 cup mayonnaise
• 1/4 cup catsup
• 1/4 cup milk
• 1 tsp salt
• 1/4 tsp pepper
• 1/4 tsp chili powder