Cream butter until soft. Stir in oil until well-blended. Add sugar and stir until light and fluffy. Stir in cloves, ginger and mixed spice, then beat in egg. Stir in ground almonds, if using. Sift flour and bicarbonate of soda, and stir into mixture to make a fairly stiff dough.
Mix red bolus with one-third of the dough, until well blended. Roll out remaining two-thirds on a lightly flo