I had seen these cookies in other countries, but as soon as we got to Argentina, everyone started to take their alfajores much more seriously. Essentially it is a cookie sandwich made of two somewhat dry but nonetheless tasty cookies and filled with dulce de leche, which in my opinion is pretty much the best-tasting milk product out there (it is made by cooking condensed milk and is not unlike caramel). That is the basic recipe, but the alfajores we've seen in Argentina are then completely coated, usually in chocolate, sometimes multi-layered, and sometimes topped with nuts. The fillings can vary as well-- we've seen fillings and coatings of fruit, coffee, or nut flavors. We've eaten a few too many of these delightful snacks during our three weeks here, but can you blame us?