Recipe from the Arabic Bites blog.
Combine sugar, milk and saffron in a small pan ,stirring over medium low heat to dissolve the sugar. Make sure the mixture does not come to a boil. Set a side to cool.
Sift the flour, baking powder, salt, and cardamom into a mixing bowl. Add the oil, the egg, and the milk mixture. Mix well and form it into a ball. Let it sit for 10 to 15 minutes.
Roll out the dough to about 1/4-inch (approx. 6 mm) thick and cut it into circles with a biscuit cutter. Make a diamond shape design using the back of knife.
Place the biscuits on a lined baking sheet, brush them with egg wash, and bake in the oven at 180C (350F) for 15-20 minutes, or until golden brown.