Place the farina, flour, baking soda, semolina, mahlab (if used)and sugar in a large bowl.
Melt the butter over low heat and add to the bowl mixture. Stir in oil, milk and orange blossom water. Knead the sticky dough well.
Preheat the oven to 200C/400°F. Place a rack in the center of the oven.
Lightly grease a 40cm/ 16 inches round cake tin.
Divide the dough into two equal portions. With the palm of your hands spread one of the dough evenly over the greased cake tin, fully covering it.
Evenly spread the clotted cream over it.
Place a large sheet of wax paper on a countertop and put the second dough in the center of the sheet.
Cover with another piece of wax paper. Roll the dough to a circle about 40cm/16 inches in diameters.
Peel off the top paper. Use the lower sheet to help you transfer the dough and invert it over the clotted cream.
Bake until well browned for about 20-25 minutes.
Remove from the oven. Allow to cool down completely.
With a pairing knife, score into medium-sized squares. Enjoy!