[teslabox]

According to the article:

  “There are other rosins made from paper mills, where they grind pulp and extract 
  it with sulphuric acid. That rosin, you don’t want to use for potatoes,” 
  explains Baker [...]

Diamond G Forest Products is an artisanal turpentine / rosin producer (also mentioned in the article): https://diamondgforestproducts.com/

[teruakohatu]

That is interesting and confirms my suspicions that there is rosin and there is unsafe rosin.

While I think New Zealand made rosin would come from pine wood not pulp, no commercial producer is going to tell me if the product uses any toxic chemicals if they get the slightest hint I plan on cooking with it.

[teslabox]

I think if you look for "New Zealand artisanal turpentine" you could find a supplier for rosin. For example: https://www.ribbonrose.co.nz/product/65514/langridge-distill...