A crunchy mix of gribbly bits from sheep, cattle, deer, chickens.
Heart, lung, liver, kidney, tripe.....mmmm yummo! 
Plus the heads and feet from the organically raised chooks! (when available) Each batch based on available raw materials.
Simply washed in filtered water and dehydrated, no chemicals!
Not for the faint hearted but...
Highly recommended by my crew.