Okay guys I managed to get some mystery goo (after half an hour of deep jungle). I found that Misty's method of Deep Jungle(ing) was the best for me, I attempted the Black Fungus method as mentioned by Red but I haven't been successful yet. Anyway, thanks to everyone for the tips i will be sure to check back later if anyone has any more tips :)
Thanks Misty, but when I did my three correct spells all I got was cure arts. Better than nothing and at least I know I'm doing the right thing but i was a bit disappointed by it. :p Suppose that the way of getting the mystery goo is by using 3 different spells?
So, I recently started playing the first Kingdom hearts game again and I was wondering what was the best method to get mystery goo, other than hitting the rare mushroom in the air a lot. (I'm not very good at juggling) thanks in advance to anyone who replies as I have been having a bit of trouble trying to get it.