2 tbsp chopped fresh chives
陆 fennel bulb, trimmed and sliced
1 garlic clove, finely chopped
2 baby leeks, trimmed and chopped
squeeze lemon juice
陆 onion, finely sliced
salt and freshly ground black pepper
200ml/7fl oz hot chicken stock (vegetarians can substitute vegetable stock)
25g/1oz butter
75ml/2陆fl oz double cream