Method
1. Preheat the over to 200 oC/400 oF/Gas Mark 6
2. Line a Swiss roll tin, 22cmx32cm/ 8 1/2"x 13" or similar with baking parchment
3. To make the Swiss roll, using a mixer with a whisk attachment, whisk the eggs and the sugar together for several minutes to get a thick foam consistency.
4. Gently fold in the gluten free flour, add one tablespoon of warm water and again gently fold in
5. Pour the mixture into the prepared tin and smooth it out
6. Bake for 10-12 minutes or until golden brown and just firm to the touch
7. Cut a sheet of baking parchment slightly larger that the Swiss roll tin and lay it on your work surface. Sprinkle the parchment with sugar.
8. Tip the cooked sponge onto the parchment, base upwards, and carefully peel the parchment off the based of the sponge, leaving the sponge to cool completely
9. To assemble, trim the edges of the sponge so they are straight and spread the jam over the base, leaving a 2cm gap at each side and 4cm gap along one of the long edges
10. Shape the ice cream into a log the length of the sponge and place it on the sponge close to the jammed edge
11. Use the parchment to help you roll the sponge around the ice cream. Neatly trim each edge of the roll and serve.