Risotto Ai Funghi (Mushroom Risotto)

Name: Risotto Ai Funghi (Mushroom Risotto)
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: European, Italian, Mediterranean
Ingredients: 3 tablespoons olive oil, divided; 1-pound mixed mushrooms, such as shitake and cremini, trimmed and cut into 1/2 inch pieces; 1 3/4 teaspoons kosher salt; 2 shallots, roughly chopped; 1 cup carnaroli rice; 1 cup dry white wine; 2 cups low sodium vegetable broth; 1/4 cup unsalted butter; 1 1/4 cup freshly grated parmesan cheese, plus more to finish; 2 tablespoons finely chopped chives; Truffle oil, to finish, if desired