Lager Posted on 5th December 20154th January 2018 by ThePD (The Project Definition) Lager is a type of beer brewed from a fermenting yeast at a long cool temperature. The Lager terminology comes from the Czech Republic. . Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Substance and tagged liquid. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.