According to various Simpsons episodes, Wolfcastle began his acting career as a child in Austria, appearing on painfully long television commercials advertising bratwurst.
I’m posting the video from Youtube but at times it gets removed so let me know if that happens.
Lyrics to The Fritz Schnackenpfefferhausen Bratwurst Song :
Rainier Wolfcastle: Mein bratwurst has a first name,
Mein bratwurst has a second name,