welsh potato, leek and ham soup

Ingredients For welsh potato, leek and ham soup

• 1 3/4 oz

  butter
• 1 Tbsp

  olive oil
• 2

  shallots, peeled and finely chopped
• 2

  leeks, sliced
• 1

  stalk of celery, finely chopped
• 1-2 clove

  garlic, peeled and finely chopped
• 2 lg

  or 3 medium potatoes, peeled and dicedsprig of thyme
• 1

  large fresh sprig of thyme
• 1

  bay leaf
• 6 oz

  shredded or diced ham hock
• 2 pt

  good chicken stock
• a handful of fersh parsley and/or tarragon
• bread to serve with