With his satirical style of writing he used to criticise fast food, TV dinners, subsidised agriculture and intensive animal farming.

For many years, he was also a regular writer with a monthly column in Stern, Die Zeit, and Der Feinschmecker.

From the end of the 1980s on, Siebeck and his wife Barbara used to live in a castle in Mahlberg near Lahr, Baden-Württemberg but spent the summer seasons in Puy-Saint-Martin, France.

[6][4] According to Siebeck, his journalistic columns as well as his books were written to achieve a certain goal: his readership should be sensitised to the idea that food and drink should always be of the highest possible quality.

[8] In the 1980s, the Südwestfunk broadcasting corporation produced and aired a 12-episodes television show that was initiated by Swiss documentary filmer Roman Brodmann who was also a gourmet.

His guests included Marc Haeberlin, Emile Jung, Hans Stucki and Heinz Winkler.

[7] In 1981, Neue Deutsche Welle band Foyer des Arts dedicated a song to him called "Siebeck hat recht!"