Pound or blend all curry paste (kroeung)ingredients. Add 1-2 tbsp water to get paste moving, if necessary.
Cut pork into 1 inch pcs. Heat 2 tbsp oil in a wide-based pan or wok, add half of pork pcs at a time and brown lightly on all sides.
If necessary, peel pineapple, cut it into 4 wedges lengthways, slice away core and cut fruit into small 1/2 chunks. Set aside
Cut round green aubergines into wedges or purple aubergines into pieces similar in size to pineapple.
Add remaining oil and curry paste to pan or wok and fry gently over a medium heat for 2-3 mins until it starts to smell aromatic.
Return pork and to pan with 300ml water, part-cover and leave to simmer gently for 1 hr or until pork is fork tender
Uncover, add pineapple, aubergines and coconut milk and simmer with lid off for a further 10 mins.
Add fish sauce, sugar and then stir in basil. Season to taste with salt and serve. If you enjoy tamarind sauce add at the end with these ingredients
I learned of this recipe from Chai leng Dunster website http://gcl.dunster.nl/2011/09/22/khmer-pork-coconut-pineapple-curry/ . She adds 1 tbs tamarind sauce and 40g of grated coconut both of which I omit. I find the tamarind's sourness detracted from the recipe and the shredded coconut was too distracting a texture. I also added significantly more spicy peppers than she did.