In the bowl of your mixer blend the two flours and salt. Add the egg, the vinegar and the sunflower oil.

Add the carbonated water and knead on medium speed for 10 min until you have a soft dough.

Weigh the dough and cut it into 2 equal pieces.

On a well floured surface roll out the first half into a large rectangle(approximately 40 x 50 cm / 15.7” x 19.6”)

Spread margarine all over the surface. Roll the sheet into a log and swirl it.

Repeat the process for the other half of the dough.

Wrap each spiral with food membrane. Refrigerate for 2 hours and they’re ready for use.

They keep well in the fridge for 24 hours or in the freezer for two months.