I don’t believe Huel Black has any extra benefits over Huel White, in fact I believe the oats contained in Huel White provide additional benefits that are not found in Huel Black.
I’m not a fan of sweeteners - not because they wouldn’t be safe, I just don’t like them and consider them non-essential. That’s why I wasn’t a fan of the very first Huel, before they came out with U/U, and why I only had maybe a couple of Huel bars in total. I’m also not a fan of added sugar.
Huel Black U/U is the first product from Huel since Huel White U/U that does not contain sweeteners or added sugar. I am a curious person, and don’t consider myself a Huel zealot, so if I see a product that ticks all the boxes, I’d be willing to try it - and Huel Black U/U (on paper) ticks the same boxes as Huel White U/U.
If I decide to put on some muscle, instead of remaining at maintenance (which is what I’ve been at for years), then I can see myself consuming 2000kcal/day of Huel White, and get the extra 500kcal/day from Huel Black.
To summarize: I don’t think Huel Black is better than Huel White, I’m simply curious, and I would not eat Huel Black for 100% of my calories.
Edited: I might as well buy a few bags of Huel Black U/U just to express appreciation of Huel in general, to thank Huel that they are listening to their customers’ requests, and to show Huel that there is demand for U/U versions of their products. If I end up not liking Huel Black, I can just pass it onto someone else, Huel Black appears to be in-demand.