In a bowl mix the milk and bread. Let sit for a few minutes to soften. Mix in the ground beef, cilantro, mint, and season with salt and pepper. Dampen hands with water and roll the mixture into equal sized balls.
Preheat a nonstick pan on medium heat. Place the meatballs in the pan and brown on both sides. Once nicely browned remove from the pan and set aside.
Heat the oil in a pot over medium low heat. Add the onions and minced garlic and cook for 2 - 3 minutes until the onions are fragrant and softened.
Add curry powder, turmeric, garam masala, coconut milk, tomato paste, and broth. Bring to a simmer then add the meatballs to the pan and simmer to an internal temperature of 155 degrees using a thermometer. Taste and season with salt and pepper accordingly.