"Should I add a little bit more of the Blood Pond essence to the two of them?" Lex wondered.
['Try giving more to Gus and then a little less to Katherine. Don't want her imploding on us now.'] Al suggested.
From the little of the Blood Pond essence that remained in the barrel, Lex scooped a portion out with his Spiritual Sense and then divided the essence, sending a lot more of the portion he scooped up toward Gustavo and then the remaining towards Katherine.
Now all that remained in the barrel was miniscule and could only benefit one more person. Moreover, it cannot be a person that is already powerful.
Like a starving beast, When Gustavo sensed the new Blood Pond essence that was floating in front of him, he unexpectedly opened his mouth and swallowed the entire thing in one go, startling Lex.
"Well, that's one way to do it, I guess. It must have been his instincts." Lex mentioned.