I have been asked to make tiny penguins to go on a cake. The customer wants to put them straight onto the icing, is there a glaze or sealant I could use to make this food safe?
According to Jonathan Neal, Associate Professor of Entomology at Purdue University, Shellac NF or carnauba wax would meet your requirements. The initials NF stand for National Formulary and are used to designate shellac which meets NF specifications for refined shellac.
Shellac NF is included in the FDA GRAS ...