Soumen
I am not sure this quite qualifies as a "power food" but I love cold soumen noodles dipped in a chilled "tsuyu" soup when its hot outside. The salty/sour soup is great when you have been sweating all day! Order a portion of edamame or soy beans in the pod with it for some real nutrition-and wash down with cold beer of course!

Scandi-La
Denmark