Albondigas en Salsa Chipotle (Chipotle Meat Balls)

Ingredients

• 4 chipotle chiles in adobo, chopped fine
• 1 small white onion, chopped
• 5 medium tomatoes, chopped fine
• 1/4 cup finely chopped carrots
• 1/4 cup finely chopped celery
• 1/4 cup finely chopped fresh cilantro
• 1 cup beef broth
• 1/4 tsp salt
• 1/2 tsp freshly ground black pepper
• 1 lb ground pork
• 1 lb ground beef
• 1/2 cup bread crumbs
• 1/2 cup milk
• 2 eggs
• 1/4 cup finely chopped onion
• 2 tbsp finely chopped fresh cilantro
• 1 tsp salt