I tried this with 2% sweetener and after a 4 day steep it's delicious. I have some GVC that I tried side by side and there's something that still gives the GVC the edge, possibly the longer steep. It just has more of a richness to it on the custard spectrum. Color wise the GVC is much darker. I'm not sure where to take this recipe next. More VC? More butter? I added another 2% sweetener and it helped a tiny bit but not exactly the direction I was hoping. I know a few people add a .9% saline solution to mixes to pronounce the flavor further. I guess there's a reason it's the most expensive juice out there. Regardless, it's a great recipe. Cudos to the OP.