Prior to relocating here, I was always the one who would bring baked goodies to a party.  Looking for baking ingredients in Seoul takes a bit of patience.   Things are not packaged the American way.  Everything powdered comes in packets.  Even vanilla is a powder packet.  The baking soda (upper right) and baking powder (lower left) bake up the same.  When using the vanilla powder, I tend toward heavy-handedness since it’s literally “scent” and not real vanilla extract.

Corn starch, baking soda, baking powder, and vanilla are powder packets in Korea.