The blue meth's purity remains a central plot point; Jesse's success in Mexico highlights that the "blue" recipe is now a globally coveted commodity.
This episode represents Jesse’s definitive transition from an amateur to a professional capable of operating under extreme pressure. [S4E10] Salud
To sell the ruse, Gus drinks the poisoned tequila first, knowing he has only minutes to purge it. The blue meth's purity remains a central plot
Walt misses his son’s 16th birthday because he is recovering from his brawl with Jesse. Gus drinks the poisoned tequila first
The episode's climax at Don Eladio's hacienda is a masterclass in tension and planning.