Stadenesch mail ntust
I think you meant to ask "What is the Stadenesch mailnut?"
Stadenesch is a municipality in the district of Bernkastel-Wittlich, in Rhineland-Palatinate, Germany.
The "Mailnut" is a type of nut that is native to the region. It's a type of hazelnut (Corylus avellana) that is commonly found in the forests of the Eifel Mountains.
So, to summarize, the Stadenesch mailnut is a type of hazelnut that is native to the region of Stadenesch in Germany.