Mix soy sauce, brown sugar, garlic and ginger until sugar has dissolved. Put chicken in 9x13 pan and pour teriyaki sauce over it. Cover tightly with foil and bake for at least one hour or until chicken is cooked through. I bake it for about 2 1/2 hours and the chicken is falling off the bone! I usually double the sauce for extra on rice.
*This is even better if you marinate the chicken for at least 2 hours in the sauce before cooking - especially before grilling.
**If cooking in an electric roaster, make sure you have enough sauce to cover chicken. Bake covered at 325°F for about 4 hours.