- Whizz all the ingredients together in a blender or processor. You may need to blitz the ingredients in stages so as not to overwhelm your machine. (I have made this soup in my Nutribullet and it worked like a charm!) Because the flavours are delicate you need to taste and adjust for seasoning very carefully: more salt or black pepper or a drop more balsamic (do not even think of adding regular balsamic to this soup, lest you want to ruin its fine colour and flavour! Simply leave it out altogether and the soup will still be delicious!).