Wash the quinoa throughly under running water until no foam comes out to remove the saponin that gives it a bitter taste and is also toxic in large amounts.
Cook the onion in a bit of olive oil on medium heat until they go translucent and soft.
Add the quinoa and warm up with the oil for a minute.
Add the wine and let it evaporate COMPLETELY or else your risotto will be acidic.
Start adding the stock a bit at a time as it evaporates and stop adding once the quinoa is cooked to an al dente texture.
Add the mascarpone cheese and parmesan cheese and mix until they melt
Adjust the seasoning.
Adjust the texture with extra stock if needed. It should spread out on its own if you pass the spoon down the centre.