We sell our "Maria & Franz" products exclusively in reusable jars. They can be reused up to 50 times. This saves the energy and resources spent on melting the glass and making new jars. While a single-use glass has to be melted at an average of 1,500 degrees, a reusable glass is washed at 85 degrees - which reduces CO2 emissions. This is why our deposit system reduces CO2 emissions by 79 per cent.