Maintain Releases Cocktail 11.2.1 (High Sierra Edition) Posted 1/16/2018 at 16:40 UTC in Mac by firstname.lastname@example.org | Permalink | Tweet Maintain today announces Cocktail 11.2.1 (High Sierra Edition), the latest maintenance update for users running macOS High Sierra. Cocktail is a general purpose utility for macOS that lets users clean, repair and optimize their Macs. This version adds ability to clear boot caches and Twitter caches. It also contains many improvements and resolves a number of other issues discovered in the previous release. The update is highly recommended for all users of Cocktail (High Sierra Edition).