One of Japan's biggest brewers is planning to deploy a beer wagon in the country's tsunami zone to serve super cold ale to survivors and people involved in reconstruction.

The beer wagon run by Asahi Breweries will make the rounds of summer festivals and other events along the tsunami-devastated east coast.

It is expected the beer, which can be quickly chilled to two degrees below zero, will be served free to disaster survivors.

The brewer's managing director, Akiyoshi Koji, says the beer wagon concept is also designed to help people who work up a sweat while working on reconstruction projects.