Heat the oil in a wok until it smokes lightly. Then add the peeled and diced raw potatoes and fry them for about 3-4 minutes until crispy, stirring occasionally. Add the pineapple, the vegetables and the curry paste one after the other and fry for 2 minutes. Now fill up the vegetable and curry mixture with coconut milk and cook for 8 minutes. Finally, season with a little salt and the chilli sauce. Serve decorated with chopped coriander leaves.