The story
The hacienda's jimador —the expert who harvests the blue agave used to make tequila— tried to create the elixir of immortality by transmuting tequila. Spoiler: he failed. You are trapped in the hacienda's underground laboratory, and his experiments have left you without your precious sense of sight.
The Jimador refuses to accept failure and shouts for his human guinea pigs to take part in a new experiment. His Apprentice knows the master's secrets and does not agree with continuing this madness.
You must taste blindly, against the clock, and analyze every sip. You will have to tell each tequila apart and put them in the right order. The Apprentice will whisper a single clue so the experiment works this time. If, in the end, you drink the exact formula, you will win your freedom.