1 garlic clove, crushed
陆 lemon, juice only
录 onion, finely chopped
2 tbsp chopped fresh parsley
1 spring onion, finely sliced
100g/3陆oz ready-cooked tagliatelle pasta
salt and freshly ground black pepper
1 tbsp olive oil
150ml/5fl oz double cream
1 free-range egg yolk
85g/3oz cooked prawns, peeled