Add a couple of inches, 3 cm of cold water to a large pot.
Add all the ingredients except the stock. Cover over a low heat for 10 to 12 minutes.
Add the stock, stir and cook for a further 10 minutes.
Remove from the heat and blend with a hand stick blender or pour into a counter top blender. The soup will be very hot so watch how you pour.
Once you've blended the soup it's read to serve in warm soup bowls.