Heat oven on to 500°C. Use cooking spray to spray a 9x13" baking pan or cookie-sheet. Or, line it with parchment-paper. Mix all ingredients for the meatballs in a large-bowl and mix together well.
Make meatballs about the same size as a golf ball and place them in a baking dish or on a cookie sheet. There should be about 21 meatballs. Cook the meatballs for about 15 minutes, or till they are cooked through. Temperature inside the meatball needs to be at 165°.
While the meatballs cook, prepare the sauce. Combine brown sugar, ginger, pineapple juice, soy sauce,garlic and water in a large-skillet or saucepan.
Mix together on medium-heat until sugar is dissolved. Stir the cornstarch, water, and add to the teriyaki sauce. Let the sauce simmer for 5 minutes or till it thickens.
Once the meatballs have been cooked, add them to the teriyaki sauce and mix well so that all meatballs have been coated. Let the sauce simmer for a while before serving over rice.