So did Mandolorians learn how to freeze Bounties in carbonate from Darth Vader?

In episode 1 of the mandolorian he freezes that blue guy (Horacio Sans) in carbonate amongst a bunch of others.It made it seem like that is part of “the way”...But upon rewatch of Empire for the first time in a while it seems like Boba learns to freeze ppl in carbonite from Darth..Can someone who knows 1,000,000x more than me fill me in? I’m basically just a fan of the movies and have seen/read little else. via /r/StarWars https://ift.tt/37X1Nyb