Asparagus Vichyssoise

• 2 potatoes
• 3/8 mixture processor (into)
• 1,800 gr casserole
• 750 ml water divided
• 700 ml water
• 700 gr asparagus spears (fresh)
• 180 ml skim milk
• 60 ml water in
• 10 ml chicken bouillon granules
• 1 gr salt