Episode #3.6 - S3-E6
Continuity mistake: Chief Goodman has implicitly outed himself as a birdwatcher, and the others look at him with pity. When Fidel resumes speaking saying "Well...", Humphrey lowers his binoculars and moves the evidence bag from one hand to the other and vice-versa. Besides small jumps in continuity that occur, the evidence bag does a 180° between shots. (00:05:30)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.