soy beef Sweet And Sour

1 pound ground beef or soy beef
16 ounces frozen broccoli and carrots
1 tablespoon brown sugar
1/2 teaspoon ginger
1/4 teaspoon garlic powder
1/8 teaspoon pepper
8 ounces can pineapple , drained; reserve liquid
2 tablespoons soy sauce
1 tablespoon vinegar
1 tablespoon cornstarch
2 tablespoons water
hot cooked rice

In large skillet, brown ground beef. Stir in vegetables, brown sugar, ginger, garlic powder, pepper, reserved pineapple liquid, soy sauce and vinegar. Blend well. Bring to a boil; reduce heat. Cover, simmer for 4 to 8 minutes vegetables are crisp tender. Stir in pineapple. In bowl, combine cornstarch and water; blend until smooth. Gradually stir into hot mix in skillet. Cook, stirring constantly, until thickened. Serve over hot cooked rice