Nougat filled milk chocolates were stored at different temperatures. C
hanges of the triglycerides compositions within chocolate coating and
nougat filling were measured by means of HPLC analysis. The well-known
diffusion equations could be applied to describe kinetics of migratio
n of triolein from nougat into the chocolate layer. These kinetics may
explain some practical experience and may be used in quality control
of multilayer or coated chocolate products.