A bag-in-box solution called the Collapsible LDPE cubitainer from http://www.cubecan.com

The Cubitainer combines a flexible, heavy-duty Cube Insert made from linear low-density polyethylene, placed inside a corrugated fiberboard overpack. 18-L and 20-L bag-in-box style container of sake for restaurant use

The Collapsible plastics soft cubitainer is a practical,safe and economical method of carrying and storing potable water,sake,mirin,plug wine,cooking wine,rice wine,liquid sauces,condiment,edible oil,liquid sugar,millet wine,Soy sauce,foodstuff additives,Vinegar,rice flavoured spirit vinegar,and other liquid foods,

cubitainer Description:

Emergency Container for individual or family distribution.
Material: compliant for water storage and food contact,Food Grade LDPE.
Tap is an option. To be order separately.

Injection molded screw cap with integral cap or quick serve tap and spigot,
Accomplishes the UN resistance test. Should resist 3 drop tests from 1.2 m high, filled with water

Spout: 38mm standard spout ensure filling the jerry can with the minimum waste of liquids.

Cap. I. D. 38 mm.

Size:  18 L, 20 L; Other capacities: under request