Make a double espresso
Get the ice cubes out of the freezer
Put 5-6 ice cubes into your shaker (or even a small jar) and add the espresso
Close your shaker with its lid. If you can't find it, just improvise..
Shake well until all ice cubes melt
Get a big glass and add a lot of ice cubes
Add your tasty mixture
Finish with a straw and you're ready to go!