This is what you need:
500 grams lean pork meat (I used a fricandeau)
-1 or 2 bell peppers
-2 red onions
-1/2 red chilli pepper
-1 clove of garlic
-5 tablespoons of ketjap manis
-2 tablespoons of (rice)vinegar
-2 tablespoons of oil (and 4 more to bake the meat in)
-1 tablespoon of djahe (ginger-powder)
-1 teaspoon of ketoembar (coriander-powder)
-1 teaspoon of djinten (cumin-powder)
-1 or 2 tablespoons of brown sugar
-2 teaspoons of sambal manis
cornstarch and/or water and/or salt as needed
Dice up the meat and marinade it in the ketjap, vinegar, oil, djahe, ketoembar and djinten.
(Preferably do this in the morning and put it in the fridge...or make it about an hour or (at least) half an hour before you want to eat)
Next, dice the bell pepper(s), onions, red chili pepper and garlic.
Heat oil in a large pan, and bake the meat on high heat (try to add as little liquid from the marinade as possible, but do keep the liquid for later use!)
When the meat is done, stir in the brown sugar, sambal and the vegetables.
Bake for another few minutes, then add the marinade to the pan.
bring to a boil, then turn down the heat and let it simmer for a while (5 - 10 minutes).
(add a bit of extra water if it's too dry...but the marinade should normally be enough)
Give it a taste,
add salt if needed.
Finally, bind the sauce with some cornstarch,
and serve it with rice (and additional vegetables if you like).