Cold And Creamy Chicken And Pasta

• 2 ripe avocados
• 1,900 ml water
• 700 ml mayonnaise
• 475 ml sour cream
• 270 gr chicken breasts (boneless skinless)
• 100 gr rotini pasta
• 80 gr butter
• 40 gr parmesan cheese
• 14 gr salt
• 6 gr cracker black pepper