One does not simply... get the title.

The title wants not to be got.

What is Lembas snow, you ask? It's snow infused with midi-chlorians. It makes it slightly colder.

Transcript

{Luke in the snow}
Obi-Wan: Luke. Luuuke. Luke... Hey, Luke!
Luke: Obi-Wan? Obi-Wan Kenobi?
Obi-Wan: I am Obi-Wan the White. And I come back to you now... at the turn of the blizzard.
Luke: Help me...
Obi-Wan: A day may come when I roll high enough to actually help you with my Force powers... but it is not this day. Luke: Got anything to eat?
Obi-Wan: Lembas snow.
Luke: Anything else?
Obi-Wan: More Lembas snow.
{beat}
Luke: WHY ARE YOU HERE?
Obi-Wan: The time of the old Jedi is over. Do we leave the Galaxy to its fate? Do we let the Rebellion stand alone?
Luke: What?
Obi-Wan: Seek Yoda and enter his academy. Graduate as a Jedi.
Luke: But I can't even move. I'm too cold. I can't study.
Obi-Wan: Then you shall not pass!