Awesome junk food tries salt-free (2,3,3)
I believe the answer is:
to die for
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for to die for that I've seen before include "hot" , "Superb" , "Highly desirable or alluring" , "Extremely desirable (colloq.)" .)