The Harrison's Bird Foods nuggets in the Coarse, Fine and Superfine products are made by a low temperature extrusion process. This differs to many other products on the market which are 'cold pressed' or 'pelletized' rather than extruded.
Although this more expensive process leads to some variation in sizes of piece, it is an important part of producing a top quality Harrison's product. This product quality is due in part to some of the benefits this method of manufacture produces such as:
Preserves the ingredients' natural flavours and enzymes which can be lost in a pelletized processes
Destroys microtoxins and digestion inhibitors
Does not degrade vitamins
Prolongs storage without the need for artificial/chemical preservatives