Dilettante bartenders beware: Fergal Murray's life mission is to eradicate your sloppy Guinness-pouring habits. Esquire catches up with the Guinness brewmaster to guide us through the Irish beer's thoughtful six-step process, nay, ritual to ensure a proper pour. And feel free to have another. "There are less calories and alcohol in a pint of Guinness than most other domestic beers," Murray says. Happy St. Patrick's Day!