been dehaired by liming degreased to produce substantially pure native insoluble collagen fibers and granulated to the desired particle size the degreasing and granulation can be accomplished with materials and apparatus known to those skilled in the art it is important that the final native collagen fiber used in the fining process of the invention retain its cross linkages i e insolubility in water during processing but yet remain substantially pure so as not to contaminate or alter the characteristics of the alcoholic beverage being fined the native collagen in particulate form preferably has a particle size of less than 1 millimeter and preferably less than 0 5 millimeter most preferably the native collagen has a particle size of less than 0 05 millimeters the particle size of the native collagen is important insofar as the finer the particle size the more surface area to provide complexization of the haze causing material and hence the finer the particle size the less native collagen required in the fining process the particulate native collagen useful in the practice of the invention may be added as a powder at a level of at least about 0 001 parts by weight to 100 parts by volume of alcoholic beverage and more preferably at least about 0 005 parts by weight to 100 parts by volume of alcoholic beverage there is no maximum amount of a particulate native collagen which can be added to the alcoholic beverage however it is preferred that no more than 0 01 parts by weight to 100 parts by volume of alcoholic beverage be used since above this level the particulate native collagen is in large excess and the unneeded native collagen merely complicates.