In a large mixing bowl, combine 4 cups of bread flour, 1/4 cup of sugar, and 2 teaspoons of instant yeast. In a separate bowl, whisk together 1 cup of warm milk, 1/2 cup of poi, 1 egg, and 1/4 cup of softened butter until smooth. Gradually pour the wet mixture into the dry ingredients, mixing until a shaggy dough forms.

Add a few drops of purple food coloring to the dough and continue mixing until the color is uniformly distributed.

Transfer the dough to a floured surface or use a stand mixer fitted with a dough hook. Knead the dough for about 10 minutes, until it becomes smooth and elastic.

Divide the kneaded dough into 15 equal pieces and shape each piece into a ball. Place the dough balls in a greased 9x13 baking dish, leaving a bit of space between each. Cover the dish with a clean kitchen towel and allow the dough to rise in a warm area for about 1 hour.

Preheat your oven to 325°F (163°C). Once the rolls have risen beautifully, place the baking dish in the oven. Bake for about 20-25 minutes, or until they are golden brown on top.

Remove the Taro Rolls from the oven and let them cool slightly in the baking dish. After about 10 minutes, transfer them to a wire rack to cool further.