I often order edamame at sushi bars. A bowl of edamame is an invitation to play with your food. Pick it up with your fingers, suck out the delicious seeds that live inside of that tough, outer-shell, and lick your fingers clean. The only thing that can make edamame better is a delicious sauce that you toss the edamame in. This is my humble opinion of course.
This sauce takes seconds to whip up and for this American-Asian, these are ingredients that are typically lying around in my fridge and pantry.