Is it a technique a Peruvian Necktie? Is it a Collar Choke? I have no clue.
Maybe it's a Peruvian Collar Choke. Well, until someone corrects me, I'm gonna call this awesome technique a "Gerbi Choke" - named after Israel BJJ competitor Yarden Gerbi who not only nails the move, but puts her opponent to sleep with it in this video footage from the World Judo competion finals in Rio 2013.
Thanks to Riley Wiseman for sharing this video with us.