Can’t decide how much booze to stock on your bar cart? Start with a list of the basic necessities that you’ll need for a wide variety of drinks. The five standard spirits are vodka, gin, rum, tequila, and bourbon or whiskey. Once you have those essentials, you can add beer, win, and mixers. Club soda, seltzer, sparkling and tonic water, cola, orange juice, sweet vermouth, Campari, and Cointreau can be used to whip up pretty much anything.