I've been playing Jinxie's Jamboree for a bit, and a couple of times I've come across essences in one of the bonus games. However, it doesn't tell you what essence you've won, so my suggestion is that when you claim your prize in the bonus game a pop-up shows up, like with nurturing, to tell you what essence you've won.

I personally love to wonder what Essence I won and like to take the time to
check my inventory to see it, but I guess it can be as great to actually see it
"live" as you win it~ P=

I agree.It's also nice to know I can get essences from the jamboree.It will probally make it alright to lose all that money but I cant do that until later.