You never have just one task to do at a time
"You always need to do two to three things at a time, and you always need to know what's next to do. That can be at a high-volume time when you've got five guests in front of you and you've gotta remember what order they came to the bar.
"Or, let's say you're working at a cocktail bar and you've got three fancy cocktails to make. You've gotta get your glassware, your ingredients, and all your tools ready. You need to grab things, work with two hands. If you see a bartender working with one hand, they're not bartending efficiently. You always have to be moving with purpose and multitasking, and that's something that takes time. Moving behind a bar doesn't come overnight -- there's a kind of rhythm, a flow."