Whisk together the dry ingredients in a medium/large mixing bowl. Add the yoghurt and oil and use a fork to distribute it onto the dough a little.
Have your fork ready and 'whisk' the dough as you pour in the boiling water. The scald gets to work thickening the dough straight away, so we want to ensure everything is incorporated.
Continue whisking until the dough creates a smooth, juicy ball of dough around your fork. There should be no dry flour in the bowl. See hydration notes in the body of the post for more information.
If the dough is much drier than this, add more boiling water gradually and to suit.
Allow the dough to cool for 5-10 minutes. It should be comfortable to pull apart and roll out without being too hot. It should also be a bit sticky as you pull it apart. If the dough is too wet, set it aside for an extra 10 minutes. You will incorporate some tapioca flour into the dough as you roll the wraps out, but you can sprinkle a bit more into the bowl if your dough is really too wet after 15-20 minutes.
Flour a clean bench space lightly but thoroughly with tapioca flour. Divide the dough into 6 balls.
Take the first ball and place it on the floured work surface. Use a rolling pin to roll it out to a little larger than your 25cm (10 inch) bowl lip or springform pan ring. This will be your cutter to cut each wrap out.
Take your time to roll the dough to an approximate 3-5mm width - it should be very thin. A chunky and thick wrap will not bend nicely and won't taste as good. Take the time to do it right - I promise the results are worth it and I promise the dough can easily be rolled this thin. If yours can't and feels too stiff, dry or fragile, see the hydration section in the body of the post.
Use the cutter to cut the wrap. Pull off the dough around the edges or use a knife if it is not cut clean off the wrap. Repeat with the remaining dough and wraps, incorporating the scraps into another ball of dough as you work. You might get 7 wraps with this volume of dough.