I first had this soup at a Hotel in Argyll and have made it a few times, with what I think were the ingredients...enjoy...I do every time....
This makes a large Pot full.....
1 kg Sweet Potatoes, peeled and chopped roughly
3 large onions, chopped
1 large leek chopped
1 sprig of fresh thyme
4 or 5 sage leaves
1 large bulb of garlic, chopped
1 litre chicken stock (or vegetable if referred)
200g roasted hazelnuts
1 dessert spoon tomato puree (for a little more body, omit if you like)
A good grate of nutmeg
a little double cream (if desired, not really required)
Salt and Pepper to taste
1. Sweat off all vegetables, thyme, sage,?garlic?until onions are translucent and start to take on some colour.
2. Add tomato puree and hazelnuts and cook out slightly for a few minutes
3.Add the chicken (veg) stock and bring to boil, reduce the heat and simmer gently for around 30 minutes.
4. Blend until desired consistency (I prefer it with a few "bits" still in, but your choice).
5. Add a good grate of nutmeg, finally salt and pepper to taste....
A fresh bloomer loaf and you're off....happy days !!