The initial blends of MunJebel rosso classico, crafted by Frank Cornelissen, artfully merged vintages to portray a broader expression of the terroir, a practice rooted in tradition and preferred for its comprehensive representation over singular vintage wines. However, by 2012, Cornelissen shifted towards focusing on single-vintage productions to achieve a more refined precision in the character of each wine. This transition marked a move away from the "old-school" style that characterized his earlier wines.

Despite this change, Cornelissen found himself nostalgic for the depth and classic profile of his original blends. In response, he revived this approach in 2016, employing a perpetual method similar to that used in the renowned solera systems of wine aging. This process led to the creation of MunJebel Perpetuum, a dynamic blend incorporating the 2015, 2016, 2017, and 2019 vintages.