(CNN) -- Roy Moorfield and Lau Chi-sun are in charge of one of Cathay Pacific's most rigorous selection processes. Last week 140 candidates were brought before them and evaluated by appearance, body, character and even how bitter they are. 

"Any flaws or problems here on the ground just get magnified in the air," said Moorfield in knowing tones. 

While it may sound like the way stewardesses were selected some 40 years ago, Moorfield and Lau were actually in Hong Kong to pick out new additions for the airline's wine selection. 

It's a job that's kept Moorfield busy for over 24 years as a consultant for the airline. "It's a dark and lonely life," he quipped, "but someone has to do it."