Pre-heat the oven to 200°C/fan 180°C/gas mark 6.
Mix the yeast, psyllium husk and the warm water in a jug.
Add the mixture to a bowl with the Fate Low Protein All-Purpose Mix and sugar, mix into a dough.
Dust a clean worktop with Fate Low Protein All-Purpose Mix and using a rolling pin, roll the dough to approximately 1 cm in depth, into a 26cm wide square.
For the filling, pour the jam onto the pastry square and spread evenly using the back of a spoon, leaving a 2cm strip around the edge, jam free
Brush the jam free area with ProZero.
Tightly roll the square and gently press down on the filling free area to seal.
Using a knife, cut a 1 cm slice from each end and discard.
Cut the roll into 8 x 2cm slices and place onto a greaseproof paper lined baking tray, allowing room for expansion with the swirls facing up.
Brush the swirls with ProZero.
Place in the middle of the oven and bake for 20 minutes.
Remove from the oven and transfer to a wire rack, cool fully before serving.
Serve with low protein custard.
Fate Low Protein All-Purpose Mix is a food for special medical purposes and must be used under medical supervision.