Milk was pasteurised (heat treated) from the 1940s, a process that kills bacteria that can cause food poisoning and make milk deteriorate or 'go off'. This Department of Health poster highlights the virtues of pasteurised milk. More milk was drunk by New Zealanders after pasteurisation was introduced.
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Alexander Turnbull Library
Permission of the Alexander Turnbull Library, National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.
Courtesy of Ministry of Health - Manatū Hauora
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