Vargas

"Venerable Sacharro, I don't quite understand. Keeping impurities? Aren't you purposely ruining your pills?

"I have to admit that your words are correct. The idea of treating each herb differently and thus adjusting the alchemy formula accordingly sounds so perfect to me that it can't possibly be incorrect. 

"But I can't wrap my mind around the idea of keeping impurities…" 

Hearing Vargas' words, Dyon frowned slightly. He thought he had explained well enough… 

After thinking absentmindedly for a moment, something clicked in Dyon's mind. 

"Venerable Vargas. When you concoct lower Venerable pills, are you not already capable of purging all of its herbs completely of these 'impurities'?" 

Vargas blinked. "Yes. I'm sure that I am."

"And what is the best purity percentage you've reached, then?" 

Vargas blushed. "… Not even 80%."