The shack stack is dangerously good! Nom. @shakeshack#Chicagofoodauthority #eattravelrock #eeeats #chicagofood  #chicagofoodie #chicagofoodbloggers #chicagofoodanddrink #foodiechats #chigram #bestfoodchicago  #chicagogram #foodporn #foodstagram #foodie #GroundUpGourmet #shakeshack