Hey there again @KingSpinosaurus -- you're mostly correct. Potion and evobar grades are determined by the grade of the ingredients averaged together. However, the quantities of each ingredient aren't counted in the equation. So even if there are 8 voxel fruits in the recipe, it counts as one ingredient in the math. Also, ingredients that have no grade (like the basic ingredients) aren't counted either of course.

Thanks for the question and sorry for the late reply! Let us know if you have any additional questions ^^

@KingSpinosaurus

I could be wrong, but I can't think of an evobar that requires grade 100 to work. From what I know, the highest minimum grade requirement is 80, which is for the Feline Second Evobar.

First Evolution evobars typically require minimum grade 30 to 40, and Second Evolution evobars typically require minimum grade 60, with the exception of the one I mentioned.

If you want to know a specific evobar's minimum grade requirement, the wiki has all that info too