Here's why:
* Common Name: "Stevensons" might be a common name used by bakeries or butchers across New Zealand, making it difficult to pinpoint a single origin.
* Evolution of the Meat Pie: The meat pie itself has a long history, predating European colonization in New Zealand. The recipe likely evolved over time, incorporating local ingredients and preferences.
* Lack of Historical Records: It's possible that specific details about the creation of a "Stevensons meat pie" have been lost to time.
If you're interested in learning more about the history of meat pies in New Zealand, it's best to focus on general historical research about food culture and regional variations in the recipe.