Actually, a little googling shows that "Liver-cheese" does not contain any trace of liver. "Liver-cheese" consists of corned beef, pork, bacon and onions and is made by grinding the ingredients very finely and then baking it as a loaf in a bread pan until it has a crunchy brown crust.
https://en.wikipedia.org/wiki/Leberk%C3%A4se

So, it's not an error from S-E.