In Nepal, most homes have a spice tray where all of the spices are easy to access in a matter of seconds. If you have a spice tray, you don't need to combine the spices in advance. If all of your spices are in separate containers that need to be opened, then it's best to prep the spices in advance since the recipe moves quickly.
Keyword Brinjal Curry, Dry Brinjal Curry, eggplant curry, Nepalese Curry, Nepali Curry, potato curry