Recipe: Rowena's Sweet & Sour "Pork"

A colleague of mine passed this very easy recipe along to me.  

Ingredients
1 1/2 cups of water
1 Big Onion (chopped)
1 Tomato (chopped)
2 cloves of garlic (minced or grated)
3 tbsp of vinegar
1/2 tsp of sugar
Spices:  1/2 inch of cinnamon stick, 3 whole black peppers, 2 cloves
pork (or chicken)

How-To:
1.  Heat oil and spices in pan.  Add garlic and fry.
2.  Once garlic is browning, add onion and fry for awhile (onion should begin to look translucent).  Once this happened, I removed the mixture from the pan (temporarily) and placed it in a small bowl.
3.  Fry tomato on low heat until it becomes a paste.  Add vinegar.  Once this is done, I removed it from the pan and added it into the bowl with the onions.
4.  Add meat and sear on high heat for 2 minutes.
5.  Add all ingredients back in pan with meat, add water and sugar (salt if you'd like).
6.  Boil until meat is cooked.

Serve over rice.

I used chicken instead of pork (take advantage of what your kitchen already has!) and will now be adding this to my mental recipe box.  It was a yummy, tangy surprise!