I would agree that there is either variation between batches or a huge difference in fresh vs a couple weeks old. My first Mastermind was from a friend of a friend and it had a stong almost metallic taste to it. I liked it but it was very different than the standard double IPA. A couple months ago I got a 4-pack straight from the brewery and it tasted more along the lines of HT. But it was excellent both times, so I can't really complain. I have not liked Hyzer Flip at all though. it tastes like I have a mouthful of lawnmower clippings while I am drinking it. It was confusing to get Hyzer too. We went to the brewery earlier in the day and bought Mastermind and they told us that Hyzer was only available at the event. We went to the smuggles notch event and there they told us that it was only available to buy at the brewery, but they sold us a 4 pack when we told them that we had already visited the brewery and been told the opposite.