Curtis Broccoli Soup

• 1 onion (chopped)
• 1 tip
• 1 looks like broccoli
• 475 ml vegetable stock
• 250 gr broccoli florets top third of stalks
• 180 ml milk
• 30 ml olive oil
• 3 gr salt
• 1 gr cayenne cheddar croutes for (garnish)