Toast the rice in a saucepan with some olive oil and add all of the piping hot vegetable stock. Stir lightly to mix the rice with the stock, place a lid on the saucepan and lower the heat as much as possible. Let the rice cook for 10 minutes, or till tender, but do not stir.
When the rice is cooked turn off the heat, add the chopped pistachio nuts, saffron, liquorice powder, butter and Parmesan. Mix well to make the rice creamy.
Serve the risotto after decorating the dish with some pistachios and a sprinkling of liquorice powder.