Dulce de leche was one of my favorite desserts growing up in Peru, although there we called it manjar blanco or white delicacy.  There are actually different types of dulce de leche and they come in a range of  shades from white to deep brown depending mostly on how long you cook it. Dulce de leche is really nothing more than milk and sugar cooked for a long time with thickener added.  But the invention of condensed milk was revo...