The Idaho Spud candy bar is not a potato LOL! It is a 1.5oz candy bar that has light cocoa flavored, soft marshmallow center drenched with a dark chocolate coating and then sprinkled with coconut. The Idaho Spud is Idaho Candy Company's best selling bar. The Idaho Spud Bar has been a favorite since it was first manufactured in 1918. This nostalgic candy bar is perfect to add to your old-time candy section in your candy shop.