Risotto is one of those things that takes forever to make, because you have to stir constantly! The Thermomix does it all for you in 20 minutes.
If you decide to change the ingredients (eg. add some sun-dried tomatoes, or peas, or asparagus, or courgette) just make sure you adjust the other ingredients accordingly, so it doesn’t go over the 2 litre limit. Otherwise you’ll have risotto spitting out the top! If this does happen, take off the cap and place the rice basket on top of the lid instead – that will help it stop bubbling up, and reduce the spitting.