Put beef, sausage, pecans, curry powder, five-spice powder, and garlic powder in a bowl and blend together. Make a well in the middle and crack the egg into it; fold mixture together until evenly moist.

Whisk vinegar, honey, and ginger together in a separate bowl and set sauce aside.

Roll meat mixture into 2-inch balls and place in a large frying pan over medium-high heat. Cook, turning frequently, until browned outside and no longer pink in the middle, 5 to 7 minutes. Add sauce to pan and quickly toss meatballs to coat. Cook until sauce is beginning to permeate meatballs, about 2 minutes more.