Tres leches” is Spanish for “three milks.”  The cakes that bear this name are sponge cakes that are literally soaked in three types of milk: sweetened condensed, evaporated and half-and-half [for this recipe].  However, whole milk or heavy cream can also be used, depending on your preference.  These cakes are also topped simply with a homemade sweetened whipped cream and maraschino cherries.