Well according to the replies on Twitter it's kinda mixed if they do it or not. Most folks are saying they don't do that though. Apparently it's bad the oil and it's not much of a hassle to make a fresh batch.
The source Link leads to "This Post doesn't exist" Incorrect link?
No. If you look at the tags you will see this image is tagged with bad twitter id, meaning the post was deleted from Twitter (most likely by the artist) at some point after being uploaded here.