Thanks to Stephen Starr, you can now nibble on black truffle popcorn while you wait for Rufus Wainwright (or Passion Pit, or Yo Gabba Gabba, whatever) to come on. Or you can pop some Asian five-spice mixed nuts while you watch Planet Earth live at the Mann. (That is, if you’ve forgiven him. If not, bring some gummi bears of your own.) First Crescendo, now Stephen Starr Catering is taking over every concession stand in the Mann. Concession stands will offer snacks inspired by Starr’s restaurants in Center City. They’ll even offer pre-made picnic lunches, where you can choose between entrees like Seared Sesame Salmon and Fried Buttermilk Chicken and sides like Udon noodle salad with Asian vegetables and arugula, tomato and Vidalia onion salad.