Maintain Releases Cocktail 9.2.3 (El Capitan Edition) Posted 3/26/2016 at 13:07 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Maintain today announces Cocktail 9.2.3 (El Capitan Edition), the latest maintenance update for users running OS X El Capitan 10.11. Cocktail is a general purpose utility for OS X that lets users clean, repair and optimize their Macs. This version adds ability to disable disk image verification. It also contains improvements on the "Optimize network" procedure, fixes compatibility issues with EtreCheck and adds OS X 10.11.4 compatibility.