Clean the mortar and pestle...

Well, yeah, at this rate, Ariadne had pretty much gotten into the routine of cleaning EVERYTHING right before she used it anyway. So this one was a given even if it was listed in the instructions and all. She quickly did a good cleaning of the mortar and pestle then turned her gaze back to the instructions.

The professor had shown them another set of directions on top of the two they already had, but at least it was the LAST set of directions. Ariadne added one unicorn horn into the mortar and then crushed it into a fine powder. Looking back at the directions, she noted where it was now time to use that extra syringe she'd filled with boomslang venom. She picked it up and also added in the venom. She began mixing it together, and when she was done, she set it aside and began the three-minute count.

Waiting...waiting...waiting...

When the three minutes was up, she added the mixture to the cauldron.