I have tried many methods for opening jar lids, and here is how I do it now:

Trying to write emails in formal Geman is a nightmare for me! I am confident in speaking German and have a pretty good vocabulary, but since I never took lessons my command of the underlying grammar is a bit shaky!
And then there is the pesky problem of "gendering"... :)

Wo kann man fragen, wie das geht? #Grundsteuererklärung #ElsterOnline

This is what the opera house in Cologne used to look like.