1 large garlic clove, grated or finely chopped
400g/14oz mushrooms, roughly chopped
few sprigs fresh parsley and tarragon, finely chopped
plain flour, for dusting
salt and freshly ground black pepper
2 tbsp butter
1 egg, beaten
4 tbsp finely grated Parmesan, or vegetarian Italian-style hard cheese
500g/1lb 2oz block ready-made puff pastry
175ml/6fl oz single cream