Good luck. That video is from member
@Bassman2003 . I didn’t mess with the pressure cooker part of the video and just used a large blue speckled enamel stock pot I had. I wrapped it with a couple layers of Reflectix and used those little balls for insulation on top. It’s actually not too bad to drink straight when it’s done and I would describe the taste as Welch’s white grape juice. Another member I consulted with told me “If you get Stinky, putrid or vomit then something went wrong.”

Mine finished with a pH of 3.5. I’ve been adding about 24-28 oz to a 5 gallon batch near the end of the boil. I think the exact amount depends on personal taste and a little bit of luck.
OT