Caramelized Onion Soup

Bahan-bahan (6 porsi)

• 2 cups fresh apple cider
• 2 pounds yellow onions ((about 5 medium onions))
• 2 tablespoons unsalted butter
• 2 tablespoons extra virgin olive oil
• 3 cups beef broth
• 2 cups fresh apple cider
• 1 bunch fresh thyme
• ½ teaspoon granulated white sugar
• salt and freshly ground pepper, (to taste)
• 6 tablespoons freshly grated Parmesan cheese