Grandma's Chicken Tamales

Ingredients

• 48 dried corn husks (approximately 8 ounces), soaked in hot water
• 2 pounds boneless, skinless chicken thighs
• 1 tablespoon olive oil
• 1 medium onion, chopped
• 2 cloves garlic, minced
• 1 (15 ounce) can tomato sauce
• 2 tablespoons chili powder
• 1 teaspoon ground cumin
• 1/2 teaspoon dried oregano
• 1/4 teaspoon cayenne pepper (optional)
• Salt and freshly ground black pepper to taste
• 1/2 cup chicken broth
• 4 cups masa harina (instant corn flour for tamales)
• 1 teaspoon baking powder
• 1 teaspoon salt
• 1 cup vegetable shortening, softened
• 3 – 3.5 cups warm chicken broth