Roseanne explains the Valerie Jarrett tweet in YouTube Rant

(TMZ) Roseanne Barr is hard at work, creating her own content where she gets to call all the shots, and that "I thought the bitch was white" rant is a sneak peek of what's to come ... TMZ has learned.

Barr's been holed up in her son Jake Pentland's Full Moon & High Tide studio all week shooting interviews with friends and family members. Jake tells us guests include himself, Barr's boyfriend, former "Roseanne" crew member Allan Stephan and her former campaign manager Thomas Muhammad -- who is black and Muslim.

Jake says the plan is to release the content on Roseanne's YouTube channel without any big networks getting involved. He says that's the only way to get a truly unfiltered and unedited version of his mom.