I developed this little number over a decade ago during my time as a caterer. It was actually used quite successfully as a 'base' in a savory application, at the time, since then I've used it a number of different sweet and savory ways.
This is a ‘sponge’ style cake, and without any yolks, it is lighter than a ‘pound’ style cake - but with the booze and butter it's still plenty rich. I believe I first whipped it together in one of my pastry classes, but I also suggested it to the executive chef of the catering company I was working for as the base for an hors d’oeuvre. The first few times I made it in bread pans like a pound cake, sliced it lengthwise about 1/2 inches thick, and then cut the slices into small triangles with legs of about 1-1/2 inches. I spread these out on sheet pans and dried them at low temperature like a biscotti. We then topped the triangles with thin slices of medium rare lamb loin and topped that with a tiny dollop of mint chutney. They were a big hit and were put on the permanent menu. We eventually baked the sponge in thin sheets to cut the preparation time.
Now I typically use the cake as a base fresh or dried fruit compotes, especially cherries at the beginning of summer, and fresh figs at the end of summer. I cut in wedges when I serve it freshly baked, but cut in slices when I serve it toasted. Traditionalists love to pair cherries with pistachios, while Modernists feel that the combination of cherries and black pepper is extremely tasty, so it works extremely well with a sweet cherry and red wine compote. It will also work with just about any properly preserved cherries or dried white figs reconstituted with a good desert wine with the liquid reduced to make the sauce. You will have a number of egg yolks left over, so you can also make a quick sabayon to top the dessert with - for just a touch of richness! Today, I baked it in my twelve-inch by six-inch pan, which is roughly equivalent to a round ten-inch cake pan. It is difficult to see the black pepper in the image, but it comes through nicely in the flavor.