that rind/outer skin of boczek piece is really inedible
Not when boiled.A bit tough I'll admit.
But I am a bit weird, I have been known to eat French suacisson sec and salami whole,without removing the skin
and some cheeses whole that some people remove the skin first.......... :-)
Which reminds me, in Alsace in France they do speck, which I assume is similar to German speck.
This is similar to Polish boczek but that skin is truly inedible... it would break your teeth.