Mushroom and truffle risotto

Put the chopped onion in the glass and blend for 5 seconds at speed 5. With a spatula we lower the chopped onion that will have stuck to the walls of the glass. Add the cleaned and halved mushrooms and the olive oil. Blend for 2 seconds at speed 4. Add the wine, a pinch of salt and program 6 minutes, temperature 100°C, speed 1. Add the rice and program 1 minute, temperature 100°C, speed 1. Add the water and program 18 minutes (or as indicated on the package), temperature 100°C, turn left, speed spoon. Add the truffle and the cheese, a little pepper, stir and let stand 1 minute.