Mix sugar, vinegar, soy sauce, garlic and pepper in a skillet.
Add chicken and simmer covered until chicken is cooked through and tender. About 30-45 minutes.
Serve over rice and enjoy.
**If making this to freeze, put the ingredients from step one into a ziploc bag and mix well. Add chicken and freeze. When ready to cook, dump frozen ingredients into a pan and simmer on low to med heat until cooked through. It will take a little longer to cook this way but it is still a quick and easy.