In a large bowl, combine the flour, sugar, salt, and active dry yeast.
Pour the warm milk into the dry ingredients, then add the egg, melted butter, and vanilla extract.
Mix the ingredients together, then knead the dough for 8-10 minutes until it becomes elastic and smooth.
Cover the dough and let it rise in a warm place for about 1 hour, or until it has doubled in size.
Meanwhile, prepare the taro filling: combine the cooked and mashed taro root with the coconut milk and the optional purple sweet potato powder for a richer color and flavor.
On a lightly floured surface, roll out the dough to about 1 cm thickness, then use a glass or doughnut cutter to cut out circles.
Place the cut-out doughnuts on a baking sheet lined with parchment paper, and cover them with a clean kitchen towel. Let them rise for another 30 minutes.
In a large pot, heat the oil to about 340°F (170°C). Test the oil by dropping in a doughnut: if it immediately floats to the surface and bubbles gently, the oil is ready.
Fry the doughnuts for 1-2 minutes per side, until golden brown. Use a slotted spoon to remove them, and place them on paper towels to absorb excess oil.
Once the doughnuts have cooled slightly, use a piping bag to fill them with the creamy taro filling.
Sprinkle the tops of the doughnuts with powdered sugar and a little cinnamon for an extra touch of flavor.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.