 
Sweet sweet Persikos Au Lait! Oh the memories!
This sounds so noobie, but I remember dumping gil on this, Yagudo Drinks, and other supplies to take on the level 20 solo avatar battles. Just me, Carby, and a sack of food/medicines. It seems like eons ago!
While this recipe actually calls for Selbina Milk, we decided to use a drinkable yogurt base that is mixed with a peach juice blend. The reason why we opted for this instead is because there are quite a few people who do not like milk, or prefer not to drink it.