no word yet on how long the liquid will be preserved for photo wikipediain spite of the popular recycling deposit system used in denmark, many beer bottles end up being thrown out and littering the landscape.but now carlsberg has partnered up with the technical university of denmark and the innovation fund to develop a bottle that is made entirely of natural materials.a major shift"if the project is successful, as we believe, it will mark a major shift in our options in regards to packaging liquids," andraea dawsonshepherd, a senior vicepresident for corporate affairs at carlsberg, said in a statement."it will be another important step towards a circular economy without waste."inclusion of wood fibresthe main component of the new bottles are wood fibres, so the bottles can be converted into organic material again.the innovative project will take place over the next three years in cooperation with the packaging company ecoxpac.