Isinglass advantageous in situations where minimal use of water is desired for the parchment as the isinglass can be reactivated with an ethanol-water mixture. It also has a greater adhesive strength than many other adhesives used for parchment repair. Isinglass Isinglass () is a substance obtained from the dried swim bladders of fish. It is a form of collagen used mainly for the clarification or fining of some beer and wine. It can also be cooked into a paste for specialised gluing purposes. Its origin is from the obsolete Dutch "huizenblaas" – "huizen" is a kind of sturgeon, and "blaas" is
Dried and salted cod Other names include "ráktoguolli/goikeguolli" (Sami), "klipfisk/klippfisk/clipfish" (Scandinavian), "stokvis/klipvis" (Dutch), "saltfiskur" (Icelandic), "morue" (French), "saltfish" (Anglophone Caribbean), "bakaljaw" (Maltese), "labardan" (Russian). The fish is beheaded and eviscerated, often on board the boat or ship. (This is feasible with whitefish, whereas it would not be with oily fish.) It is then salted and dried ashore. Traditionally the fish was sun-dried on rocks or wooden frames, but modern commercial production is mainly dried indoors with electrical heating. It is sold whole or in portions, with or without bones. Prior to the collapse of the Grand Banks (and other) stocks due to overfishing, salt