4 tbsp roughly chopped fresh basil
2 tbsp roughly snipped fresh chives
2 garlic cloves, crushed
1 lemon, juice only
500g/1lb 2oz chestnut mushrooms, sliced
4 tbsp roughly chopped flatleaf parsley
300g/10陆oz fine linguine pasta
salt and freshly ground black pepper
knob of butter
200g/7oz full-fat cr猫me fra卯che
75驳/2陆辞锄 Parmesan (or alternative vegetarian hard cheese), finely grated