Mixing store bought with store bought also can work in some cases, though. For example, I thought that Yankee Juice Co Sherbet Lemons tastes way too bitter for my liking, IME it tastes fairly extremely bitter actually, but after I added Alien Vape Catalina at 25%-30% it got truly excellent. By itself, Catalina is pretty good also, but it’s one of those juices that can taste a bit soapy at first, until the soapy undertaste wears off completely as a result from the taste buds adapting theirself over the course of just a few hours or maybe less, and, when mixed together with the Sherbet Lemons this initial undertaste kind of effect didn’t seem to occur. Incidentally. 
