REFRIGERATION OF FISH 



551 



if left on do not glaze well, dry out rapidly in the freezer, and act 

 as a wick to draw out the moisture from the adjacent tissues. 



Table 8. — Gain in weight on glazing squid 



Table 9. — Trimming and glazing halibut 



« Based on original or unglazed weight. 



OTHER PROTECTIVE GLAZES 



Materials other than ice have been used to cover fish, but appar- 

 ently without commercial success. Paraffin has been tried, but is too 

 brittle at low temperatures and can be applied in a perfect film only 

 with great difficulty. Another substance tried with more success in 

 Germany is called " Jela," a proprietary mixture of linseed oil, resin, 

 paraffin, and carnauba wax. It is more flexible and more easily 

 applied than paraffin, and undoubtedly keeps the surface of fish in 

 almost perfect condition during long periods of storage. Being im- 

 pervious to water and air, it prevents the slow evaporation, oxidation, 

 and absorption of cold-storage odors that take place where impervious 



