Jerusalem artichoke are actually a member of the sunflower family and add a wonderful deep nutty flavour which enhances the fresh tasting celery. Choose firm tubers with the smoothest surface as they are easiest to peel. Use a liquidiser or hand blender to achieve the smoothest results; 1L stock gives a fairly hearty consistency so add more liquid as you prefer which of course also adds to the number of servings available. Freezes well.
For 8 Serving(s)