Unlike traditional stainless steel casks, Emmerald casks are not attractive to thieves. However, the HDPE used in their construction is fully recyclable, helping to reduce your carbon footprint. Globally, over €650 million worth of stainless steel kegs and casks are stolen annually for the raw material. The value of the GreenCask is to the brewing industry and not the black market. The GreenCask can be supplied with a tamper proof RFID track and trace.