Yogurt, cream, green chili and ginger need buy. He never use coriander and chili flake de .. ownself say added chili flakes at the end for "aesthetics" haha. Onion need buy 2-3 whole ones, chop and boil for a bit then use blender make paste. Yeah, go Mustafa or one of those fresh stockist shops near Mustafa will have all these items. No need go inside the maze