This is a recipe given to me about 30 years ago by a friend living in Somerset, England. It is extremely easy to make, but the finished cake looks very professional. The ingredients can be doubled or even trebled and the result is always good. Originally, I was given the recipe using only one egg, but the resulting cake is far too small, particularly when entertaining. Sometimes, I vary the sugar in the pastry and substitute light brown sugar flavoured with vanilla, which is available in French supermarkets. I melt the butter in my microwave in a bowl and then complete the pastry in the bowl.