1: Third stack of paper rises to the top. (5)
3: Partial approval for eggs (3)
5: Caress one grand puzzlemaster (5)
7: How to eat the heart of marsupial (3)
8: See, sir; bar is operating at the beer eatery (9)
10: Former name for joint audition (3)
11: Foolish, turning in that penicillin (5)
12: Non-clerical song (3)
13: Send back stopwatch, as an example (5)