Mix sliced pork with 1 tablespoon of cornstarch, working the cornstarch well into the meat. Set aside.
In a heavy duty braiser (I use a 3.5 quart le creuset braiser), heat 1 tablespoon neutral oil over medium heat. Add the curry paste, lemongrass and ginger/galangal and kaffir lime leaves. Using a wooden spoon, sauté the paste and aromatics for about 3-4 minutes until the paste starts to brown.
Add the pork and sear it for 2-3 minutes, tossing it in the curry paste.
Add coconut milk and bring to simmer, using the wooden spoon to scrape up browned bits. Reduce the sauce a bit until the curry sauce has darkened slightly.
Add the palm sugar and fish sauce and cook until sugar has completely dissolved. Taste sauce and add salt as necessary.
Using a slotted spoon, remove the lime leaves, ginger/galangal and lemongrass, and discard.
Add the onion, bell pepper and carrot and simmer for 5-7 minutes, until tender.
Stir in the Thai basil and simmer for another 5 minutes. Taste for any additional seasoning, then serve topped with Thai basil over steamed jasmine rice.