There are two potential explanations for why chocolate chips do
not bloom when baked in cookies. The first relates to the possibility
of a crystal memory effect. When cocoa butter is heated just above
its melting point for a short time, a small amount of high melting β
crystals may remain in the liquid melt. As the cocoa butter is cooled,
these β crystals can provide the structural information necessary for
the cocoa butter to recrystallize directly to the β form