Question: The closest I was able to find is ***in Kürze***.

Is there a translation that means something similar as it does in English?

Answer: 
Posible translations for »in a nutshell« are:

> 
> in (aller) Kürze  
> 
>  zusammengefasst  
> 
>  kurz gefasst  
> 
>  kurz und bündig  
> 
> (plus a few more)
> 
> 
> 

There is no term containing the German word »Nussschale« that has the meaning of »in a nutshell«.

But there is the German term »**in einer Nussschale**«. It means: »In a very tiny boat«. If five people want to cross the sea in a boat that is made for two, then they are shipping »in einer Nussschale«.
It is "kurz gesagt". There is a well known YouTube Channel named *Kurzgesagt* or "in a nutshell". Check it out [here](http://youtube.com/kurzgesagt)