93. As already explained, any icing used for the top of the cake may
also be used for the filling that is put between the layers, but often,
to obtain variety, an entirely different mixture is used for this
purpose. A number of recipes for cake fillings are here given, and from
these the housewife can select the one that seems best suited to the
cake with which it is to be used. As will be noted, many of them are
similar to custard mixtures, and these, in addition to being used for
cakes, may be used for filling cream puffs and éclairs. Others contain
fruit, or nuts, or both, while still others resemble icing, with the
exception of being softer. No difficulty will be experienced in making
any of these fillings if the directions are carefully followed. They
should be applied to the cake in the same way as icings.