The long pour comes in handy when drinks need to be heavy on the liquor and light on the excuses. Long pouring refers to adding more alcohol to a drink than what is called for in its recipe. Perfecting your own long pour requires practicing different drink measurement methods, each one resulting in a heartier and more potent mixed drink.
Add more alcohol to the mixed drink with a jigger. A jigger is a double-sided measurement device that looks like a hollow metal hourglass with one end larger than the other. The two ends measure two different amounts, with one end usually being one-half ounce to a full ounce larger than the other. Mastering the long pour with a jigger just means to use the larger opposite end instead of what is called for in the recipe. You don't have to fill the other end to the brim -- just more than the original end. The jigger's intended end can also be used twice for double the amount.
Practice your free pour, then pour more. Free pouring means to pour alcohol from the bottle without any measuring cups while relying on a "count," which is the duration of time that a certain amount of liquid takes to pour. Take an empty liquor bottle, fill it up with water, affix a metal or plastic pour spout, and then pour the contents into an empty glass while counting. Start slow, and come up with your own counting system, like "one-Mississippi, two-Mississippi." Measure the amount of liquid with a jigger, and keep practicing. When you have your free pour down, then you can long pour by pouring longer.
Add to the drink's entire volume by increasing all of its ingredients. This method of the long pour is akin to the classic double, which in most establishments is closer to 1.5 times more than the usual drink. Consult the drink's recipe and add more of each ingredient via jigger measurement, free pouring, or a measuring cup or spoon. The best long pours with this method need to equally increase the measurement of all the ingredients. If a drink requires 1 ounce of vodka, 1 ounce of triple sec, and 1 ounce of lime juice, increasing each ingredient by 0.5 or 1 ounce more will create a balanced cocktail.