Isinglass 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 a bladder, or German "hausen blas", meaning essentially the same. Although originally made exclusively from sturgeon, especially beluga, in 1795 an invention by William Murdoch facilitated a cheap substitute using cod. This was extensively used in Britain in
Winemaking in Bordeaux process before being released. In Bordeaux the oenologists play a huge role. Many oenologists work as consultants to different châteaux and carry much weight in major decisions regarding the wine. Amongst the most famous oenologists are Emile Peynaud, Jacques Boissenot, Pascal Chantonnet, Olivier Dauga, Stéphane Derenoncourt, Denis Dubourdieu, Jean-Philippe Fort, Gilles Pauquet, Michel Rolland, Stéphane Toutoundji and Christian Veyry. Winemaking in Bordeaux Winemaking in Bordeaux is the collection of processes used to make Bordeaux wine. Winemaking in Bordeaux differs from winemaking in other places both because of the Bordelais climate and because of the particular Bordeaux style which the wine-maker