Wearing gloves, peel the jackfruit and cut it into 5-cm / 2-inch pieces, peel the seeds as well.
Put the ground coriander, turmeric, and chilli powder in a small bowl, add 2 tablespoons of water and stir together.
Heat the oil or ghee in a large, heavy-based pan over medium heat, add the jackfruit, not the seeds, and fry for about 10 minutes, or until golden brown. Remove from the pan and set aside.
Add the asafoetida to the pan and stir-fry for about 30 seconds, or until dissolved, then add the cumin seeds and stir-fry for about 1 minute, or until they start to splutter. Add the ground spice mixture, then season with salt and stir-fry for about 2-3 minutes.
Add the fried jackfruit, the seeds, and 250ml / 8fl oz (1 cup) water to the pan. Reduce the heat to low, cover, and cook for about 30 minutes, or until the jackfruit is tender.
Add the yoghurt, garam masala, and amchoor and cook for a further 15 minutes.