It's not just about the number of years your bartender has been alive, but also about their maturity level. A good bartender needs to be able to multitask, think on their feet, and handle high-pressure situations. They also need to be knowledgeable about the drinks they're serving and be able to make recommendations to customers. So, even if a 20-year-old is technically old enough to bartend, they may not have the necessary skills or experience to do the job well.
Think of it like learning to drive a car - just because you're 16 and old enough to get a license doesn't mean you're ready to hit the road. You need to practice, get experience, and develop your reflexes before you can become a safe and confident driver. The same is true for bartending - it takes time, practice, and patience to become a skilled and knowledgeable bartender.
How To Become a Successful Bartender in New York City