Ingerus Sausage is one of the many different rations available through CLMIL Rations, which are bagged rations handed out to Clavic military forces.
In the 2nd edition bags, Ingerus Sausage is meal 5.
Bag Details
Apart from the standard icons and instructions, the label says "Gently Seasoned Ingerus Sausage" and the item number is CLR3754312.