When the rice is cooked, turn off the heat, stir in the grated Parmesan, the remaining butter, half the oil and the chopped herbs, then season with salt and pepper. Cover with a lid and leave the risotto to rest for a few mins. Now make your herb salad. Roughly chop the chives, then mix with the whole herb leaves, remaining olive oil and the balsamic vinegar. Give the risotto a final stir, then serve in bowls topped with some of the herb salad and some shaved Parmesan.