Put your eggwhites into a bowl and add the coconut flour, bicarb, seasalt and the lukewarm water. Mix this well until the mixture is smooth. Leave to stand for a few minutes.
Cut the vegetables for the filling in the meantime.
Heat a frying pan with a bit of coconut oil and pour the mixture in. Once the top of the wrap is dry turn it around and bake the other side.
Turn out onto a big plate and top the wrap with your choice of filling.