Spiced leek, potato and lentil soup recipe

INGREDIENTS

• 1 cumin seeds
• tbsp butter
• 40 medium leeks, trimmed and sliced
• g thumb-size piece fresh root ginger, peeled then grated
• 4 handful fresh coriander, stalks finely chopped
• 1 fat red chilli, deseeded and finely chopped
• 1 large Maris Piper or King Edward potato, peeled and thinly sliced
• 1 split red lentils
• 175 butter
• g medium leeks, trimmed and sliced
• 1 thumb-size piece fresh root ginger, peeled then grated
• tbsp handful fresh coriander, stalks finely chopped
• 40 fat red chilli, deseeded and finely chopped
• g large Maris Piper or King Edward potato, peeled and thinly sliced
• 4 split red lentils
• 1 chicken or vegetable stock
• 1 semi-skimmed milk
• 1 half fat crème fraiche or creamy yogurt, to serve