There is a very sweet tradition observed in many restaurants in Greece. They serve complimentary desserts to the clients along with the bill. And if you are lucky, this dessert is not fruit, but something really sweet and tasty. And if you are very, very lucky, this is a Greek halvas.
It is a really sweet dessert, prepared from semolina and sugar syrup. So I will not try to convince you that it is low in calories. Because it is not. But once in a while it is a permitted sin, I hope. The amount of the key ingredients is easy to remember - 1, 2, 3, 4.