5. Add the beef, stir well and let come to a second boil.
6. As soon as it comes to a second boil, clamp the lid on and transfer to the oven to cook for 2 hours.
7. Once it’s out of the oven, leave it to cool, then refrigerate for at least 1 day, or up to 3 days–this allows the beef to get tender and the flavors to meld.
8. About half an hour before you want to eat, preheat the oven to 400, and cut the potatoes into similar-sized chunks as the beef, then add them to the pot of curry.
9. Place the pot on the stove, add 1 cup boiling water, and bring to a boil, then clamp on the lid and transfer to the oven for 30 minutes, or until the potatoes are tender.
10. Sprinkle with some shredded Thai basil leaves, or chopped cilantro and serve immediately.