I was looking for a marinade sauce for roast chicken and combined a few to come up with this version. If you don't want to use fresh tomatoes and onions, you can substitute 1/4 c. tomato juice and 1/2 tsp. onion powder. If you don't have beef or chicken consume, then use chicken or beef base powder/cubes (you'll have to play with the amount until it suits your taste. I thicken it with cornstarch mixed with water, but you can use flour instead. You can also substitute lemon juice for lime juice, or fresh garlic for garlic powder. I'm just giving a basic recipe but you can use any combination of ingredients to suit your taste. For this recipe, I just brush on a bit of the sauce on the chicken and put it in the oven . The point I'd like to make though, is that you should set aside a bit of the sauce in a bowl first. Use this to brush the raw chicken (I don't use the sauce from this bowl again, esp as the chicken nears the end of the required cooking time. I always pour a little into a clean bowl and brush it on, wash the bowl well, and repeat these steps every time I go to brush more sauce on the chicken.