I have had the privilege of being able to test a few select instruments for macerating or pulverizing very complex matrices including hard candy and botanical material. A sound practical approach in selecting the right tool for the job means testing a significant amount of different materials - conditions and technologies. Here are a few examples. IKA makes several "blade" grinders- the user can also add dry ice into a edible or hard candy to assist in flash freezing the sample. I have noticed the freezing of the sample no matter what form- will significantly impact the quality of grind- whether blade or ball type grinder.