While a person might ponder which is the better recipe, ground almonds or extra flour, almost all of them included lemon zest which I totally forget about when I made this but I've included it in the recipe here because the general consensus has persuaded me it is necessary. I also know that traditionalists put strips of candied citrus peel on top of the cake but there was no way I was going there. A whacking great bar of hardness of top of my cake? No thanks. You can even keep your chopped peel, no matter how ungrateful it makes me seem. Plus, this way I got to use my pretty rose shaped silicone cake mould again which came with a long ago issue of Baked and Delicious.