Step 1- Add olive oil to a large saucepan and fry off the onion, garlic, fennel and leek.
Step 2- Add broccoli and stock, and bring to the boil
Step 3- Simmer until the broccoli is tender
Step 4- Blend with a stick blender until smooth, season with salt and pepper to taste
Step 5- Serve with a dash of light sour cream and fresh parsley
