It's dinner time!

Ingredients

• 1 ½ teaspoons olive oil
• 1 ½ teaspoons butter
• ½ white onion, chopped
• 1 cup chopped fresh cilantro, divided
• 3 cups chopped fresh mushrooms
• ½ teaspoon salt
• ½ teaspoon ground black pepper
• 6 cups chicken broth
• 5 cups chopped endive
• 2 cups milk
• ½ teaspoon cayenne pepper, or to taste
• 2 cups plain yogurt