Lettuce Risotto - Lidia

Ingredients

• 7 cups or more hot Chicken Stock, preferably homemade (see here)
• Kosher salt
• ¼ cup extra-virgin olive oil
• 1 cup chopped onion
• 1 cup chopped leek, white and light green parts only
• 2 cups Arborio rice
• 1 cup white wine
• 8 ounces outer lettuce leaves (romaine, Bibb, etc.), shredded
• 2 tablespoons unsalted butter, cut into pieces
• ½ cup grated Grana Padano