Alex took out the Blood Revitalizing Ginger and cut it up into 5 different pieces. He then used his Supreme Elemental Accord skill to put energy into the ginger to ready it up for when he was going to have to make the pill.
After the ginseng, he spent some time focusing on the other ingredients and once everything was done, he took out Memory and proceeded with making the True Rejuvenating pills.
The True Rejuvenating pill recipe was one of the many True rank pill recipes he had improved while he was still in the Western Continent. So, it was quite easy for him to make the pill that reached 100% without any effort.
However, when he did reach 100%, something weird happened inside the cauldron. The pills that had reached 100% harmony simply dissipated some of their energy to reach a lower level.