Preheat the oven
to 160C/325F/Gas 3. Grease and line a 20cm/8in
round deep cake tin. Cream the butter and sugar
until pale and light. Add the eggs, 1 at a time,
beating well after each addition.
Sift together the
flour, baking powder and spices. Fold into the egg
mixture alternately with the remaining ingredients,
until evenly combined. Transfer to the cake tin.
Smooth the surface, then make a small dip in the
centre.
Decorate the top
of the cake by pressing the blanched almonds in
decreasing circles over the entire surface. Bake for
2 -2 1/4hours, until a skewer inserted in the
centre of the cake comes out clean.
Leave to cool in
the tin for 30 minutes then transfer the cake to a
wire rack.