Leek, Celeriac and Smoked Pollack Soup - River Cottage

Ingredients

• 500g smoked pollack or kipper fillets
• 1 litre whole milk
• 1 bay leaf
• A bunch of parsley, leaves chopped, stalks reserved
• A large knob of butter
• 2 large leeks, finely sliced
• 300g potatoes, peeled and cut into roughly 5mm dice
• 300g celeriac, peeled and cut into roughly 5mm dice
• 1 tablespoon finely snipped chives
• Sea salt and freshly ground black pepper