Aprijuice...this helps a whole lot when entering the Pokeathlon but sometimes the guy who sells it doesnt have the right one to enter a certin course, for this its much better to make it yourself.
Here are the apricorns and what type of juice it makes.
It has a neutral flavor, but it boosts up Mildness a bit
It has no flavor whatsoever and gives a disgusting aftertaste
Well those are all the apricorns and what they work for