Every once in a while, as I go about my business in the secular world, a non-Jewish passerby notices my kippa and approaches, then offers the greeting that is somewhat well-known in popular culture as the one Jews prefer: "Shalom." I appreciate this cross-cultural gesture, and I always respond with my own cordial "Shalom," but I feel like something's missing.
I recently saw the movie Black Panther, and noticed that when people from the nation of Wakanda portrayed therein greet each other with the traditional "Wakanda forever!" they have a really cool salute to go with it. That made me think that there must be a really cool gesture in Jewish tradition that goes with the "Shalom" greeting, that I just don't know about yet.
This gap in my knowledge makes me sad. Here I am, going around visibly representing an ancient body of tradition, and when someone notices and engages in our traditional greeting, I don't know the impressive ancient move to make when responding, so that my greeter can leave the meeting satisfied that they've not only exchanged greetings with an authentic Jew, but that it was an awesome encounter with an ancient tribe.
So, what is the traditional gesture to make when extending the Shalom greeting? What details should one make sure to include so that it comes off as authentically awesome?