The thing about apple juice is it needs craftsmanship skill over magic craftsmanship skill I believe which may be why it feels so difficult to synthesis. I also have a ton of apple juice on me and it is very sad that it doesn't sell well. The ratio of 6 apples for 3 juices is simply a horrible cooking recipe which reduces the number of synthesis to skill up on. If they would just make it 2 apples to make 1 juice or make foods stack to greater then 12, it would greatly help players to raise cooking easier. One stack of apples turns to five stacks of juice so it is just a inventory space killer. Also I think 30 is the minimum rank requirement to make apple juice which is could be overly difficult.