Was playing with Dolphin, and found no way to bring back the menu after I had made it disappear.
Could not find an answer in Google, and neither here.

Rigth click on the white area or press CTRL+M is the default shortcut to show/hide the menu bar

Thanks, the Ctrl+M does it. But the right-click in the white area, any area, does not. Anything else comes up, file properties, widgets, etc.
I had actually as well right-clicked some twenty times here and there, in all areas of dolphin, before posting; but no 'show menu' popped up. And it still doesn't.

It should look like this:

Note that it won't show up if the menu is shown.

If the question has been answered, please mark the topic as solved.

Solved, thank you.

I still feel that it wasn't exactly intuitive, though.

about all apps behave like dolphin... it is quite hard to find a better way to edith the user interface for bringin back the menu, currently this looks the easier way.