Asparagus Risotto

Bahan-bahan (6 porsi)

• 1 pound asparagus (tough ends trimmed), (cut into 1-inch pieces)
• 6 to 7 cups chicken or vegetable broth
• 3 tablespoons butter, (divided)
• 2 tablespoons extra virgin olive oil
• ⅔ cup diced red or yellow onion
• 1½ cups Arborio rice
• ½ cup white wine
• ¼ teaspoon salt
• ½ cup freshly grated Parmesan cheese