If you want to grab a meal before a gig at Crookes Social Club, here are some places which are recommended on tripadvisor:
Casanova (Italian): http://www.casanova-sheffield.co.uk/ Phone: 0114 2666684
Indian Chef: www.indian-chef-sheffield.co.uk/ Phone 0114 266 6052
No Name Bistro (TYO): www.facebook.com/NO-NAME-Sheffield-1695321363841840/?ref=py_c Phone 01142661520
Also The Ball pub (http://www.ball-sheffield.co.uk/ ) does decent and reasonable pub grub. Phone: 0114 2661211.