Fry the onions in the olive oil in a non-stick pan and fry the chopped onion a. When it is golden brown, add the rice and toast it for 5 minutes, then add with the white wine, stirring for a minute. Cook the rice by adding the vegetable broth prepared in another pot a little at a time. Don't forget to stir continuously!
When the rice is cooked, add the grated pecorino and the minced summer truffle, stirring on a very low heat, until the cheese has melted. Serve warm