Grilled Trevisano or Radicchio With Gorgonzola, Olive Oil, and Saba Recipe

Ingredients (5)

• 2 whole heads trevisano or radicchio, split in half through core
• Kosher salt and freshly ground black pepper
• 1/3 cup crumbled gorgonzola cheese
• Extra-virgin olive oil, for drizzling
• Saba or balsamic syrup, for drizzling (see note)