Marinated Beef Kabobs

For Marinade

• 1/2 cup soy sauce
• 1/2 teaspoon garlic powder
• 1/2 cup water or beef stock
• 2 tbsp rice vinegar you may use any other kind of vinegar
• 3 tbsp brown sugar
• 1/2 teaspoon cinnamon
• 1/2 teaspoon ground ginger

For Kabobs

• 2 Lbs sirloin beef for instance), cut into cubes
• 2 red peppers cut into squares
• 1 red onion cut into squares
• 2 Yellow Peppers cut into squares