Draught beer at a great height is a problem. The carbon dioxide given by tapping less back pressure, allowing the beer to hard would squirt out of the tap.

Heineken has developed the new packaging system Brewlock for two years, not a CO2 cartridge but pressure works. They may also be tapped beer at 10 kilometers altitude, says marketing manager Lennart Boorsma the beer company. He confirmed Saturday a report on this in Het Parool.

The system is now incorporated into a trolley, which is across the aisle on the plane. What, however, does not fit into the system, is the cooling. Therefore, the beer before leaving cooled off the plane and landed in insulation. For example, the eight hour stay cool.

Within months, the draft beer launched on a number of KLM flights. The new packaging system is already used in countries where CO2 logistics is less easily available. Later can possibly make other system airlines use