04 Mar 2022 --- Morrisons supermarket’s decision to switch its own-brand fresh milk from plastic bottles to Tetra Pak cartons has ignited a debate over whether this is a commendable decision to reduce plastic or a greenwashing stunt that could actually lead to more waste.The new fresh milk Tetra Pak cartons are made from FSC-certified, plant-based paperboard. They feature a very thin layer of plastic coating and twist caps made from polyethylene derived from sustainably sourced sugarcane.