Saute onions and mushrooms in olive oil, until softened
Add rice and cook for another 2 minutes, stirring constantly, until lightly toasted.
Add wine, if desired
Gradually ladle in simmering vegetable stock, stirring continuously. Risotto will become "creamy" and slightly sticky, yet still firm in the center, or al dente. Cook until rice is nearly
Add corn, then zucchini, then peas, then spices to the mix, until all is cooked