Dinner Chowder

• 600 ml boiling water
• 475 ml milk
• 300 gr potatoes (raw diced)
• 160 gr tomatoes (canned)
• 110 gr cheddar cheese (grated)
• 75 gr onion (minced)
• 60 ml corn oil
• 50 gr deiced celery
• 32 gr flour
• 7 gr salt