Heat up a cast iron skillet over medium high flame. Make sure it is seasoned well or you’ll have to add a drop of oil to coat it all over.
Cut the tofu into 1/2 inch thick sticks and sprinkle with a pinch of sea salt all over. Dredge them in the tapioca flour making sure to get all sides then add them to the hot skillet.
Sear the tofu for about 2 minutes per side until nicely golden all over. Transfer to a paper towel lined plate until needed.