The revival of preserving heads is being debated, according to a Waikato University professor.
Professor Pou Temara says artists have replicated the old methods by experimenting on piglets.
Professor Temara is the chairman of Karanga Aotearoa, Te Papa Museum's repatriation programme, which yesterday received 20 toi moko (preserved heads) from French institutions at a ceremony in Paris.
The heads will be welcomed to Te Papa tomorrow.
In the era before toi moko were traded with Pakeha, they were venerated and mourned. Kawe mate ceremonies, where Maori take photographs of deceased whanau members onto marae to mourn them after a tangi, echo the older practices associated with heads, according to Professor Temara.