OG Cola is a throwback to the clean, classic taste of what a traditional cola should be. OG Cola is a throwback to the clean, classic taste of what a traditional cola should be. Keepin' it real with real sugar, natural flavours and infused with a dose of 3.5 mg THC per serving. The Sweet Justice Classics collection of cannabis-infused beverages is inspired by old-school craft sodas and mixology recipes which are flavour-forward and familiar — but with a twist.