What is a "speed rack" on a bar?

What is a "speed rack" on a bar?

A speed rack is one of the most important things for a bartender. The speed rack is usually positioned directly in front of wherever you're going to do most of your bartending. the speed rack contains one of every major liquor, so one vodka, one gin, one tequila, one rum, one sour mix, and then hopefully one of each type of mixer. You also want to have your lower-end drinks in the speed rack, unless all you're pouring is top shelf liquors. The reason for this is because if you're using things from the speed rack, this is what you're using the most of. Premium liquors are called out more often than not, so someone that wants a Screwdriver with Ketel One will say, "I want a Ketel One Screwdriver." If they just say a Screwdriver, then you'll just take it from your speed rack and pour away.