Espresso: This is a great option for someone who can wants the caffeine from a cup of coffee but doesn't want to drink an 12oz beverage. If you order a shot of espresso, you will be given a 1oz shot of pure espresso. While espresso is basic, there are also a few variations depending on the boldness and amount of caffeine you want. Some simple variations to the single shot are the Ristretto (Short Shot: ¾ oz.) or a Lungo (Long Shot: 1 ½ oz.) For a little more caffeine, go for the Double Shot (Doppio), which is a longer shot, using twice the amount of ground espresso.