That looks delicious!
It reminds me a little of an Indian dish called "Kashmiri Dum Aloo", where the potatoes are similary cooked in a rich sauce (in this case, yoghurt) and allowed to soak up the flavours.
I found a Potato Rendang
Looks good. Potatoes are a perfect vehicle for soaking up flavour. My issue with rendang is an intolerance of coconut milk. So I avoid it. Maybe I could substitute full fat yoghurt.