Signature cake

The reinventors are usually not into exclusivity, but in this case, we may make an exception.

If you poach some oranges (preferably those grown by D and P) in sugar syrup, line a cake tin in foil and arrange the slices on the bottom.

Then make up a butter cake with lots of vanilla extract and a handful of coconut for texture.
Once it's baked, pour the poaching syrup over the top.  Flip it over.

And you have Marmalade Cottage Marmalade Cake.