In a mortar or blender, grind shallots, nuts, turmeric, and fresh chiles to a fine paste. heat the oil to medium in a wok and stir-fry the past until fragrant. add potatoes and mushrooms, stir-fry for 1 minute. add coconut milk and salt. bring to a gentle boil. add chicken and small chiles. cook, stirring often for 20 minutes. serve over rice.