Whisk the tapioca flour and 80ml of water in a bowl until combined.
Place the sesame seeds in a small, shallow bowl.
Dip the avocado slice into the tapioca mixture to coat, then coat with the sesame seeds, patting down gently.
Heat the coconut oil to 160°C in a frying pan or saucepan. To test the temperature, drop a piece of avocado in the oil – it should bubble instantly around the edges.
Working in batches, fry the avocado for 50-60 seconds on each side or until the sesame seeds are golden. Drain on paper towel and season with a little spice (if using) and salt.
Serve with Lemon wedges