Fat migration was
shown to be the primary factor that influenced bloom formation on
chocolate chips baked in cookies. When the fat content of the cookie
dough was sufficiently high, enough fat migrated into the chocolate
chip such that, upon cooling and storage, bloom was inhibited. The
degree of migration necessary to inhibit bloom on chocolate chips
was similar for cookies made with palm oil shortening and olive oil,
even though the amount of fat added to the cookie dough was not
the same.