In the middle of the other two listed above is the mincemeat Christmas cake . It is simply any traditional or vegetarian mincemeat mixed with flour , eggs , and other pastry ingredients , to transform it into a cake batter ; or it can also be steamed as a Christmas pudding . In the middle of the spectrum is the mincemeat Christmas cake , which is simply any traditional or vegetarian mincemeat mixed with flour , eggs , etc. , to transform it into a cake batter ; or it can also be steamed as a Christmas pudding .