Curried Leek and Apple Soup - Lavender and Lovage

Ingredients

• 1 teaspoon rapeseed oil
• 2 teaspoons curry powder (mild or hot, according to taste)
• 3 small leeks, trimmed, washed and finely chopped
• 100g potato, peeled and finely diced
• 2 cooking apples, peeled cored and chopped (or tart eating apples)
• 600mls vegetable stock
• 4 tablespoons low-fat natural yoghurt
• salt and pepper to taste
• fresh chives, chopped (as a garnish)