Add some ice cubes into the glass and fill halfway.
Put your desired amount of simple syrup into the glass.
Using the measuring cup, pour 2 fl oz of orange juice leaving enough space for your espresso. You can double this if you want to have a more evident orange than espresso flavor.
Measure 2 fl oz of your drip coffee or cold brew concentrate.
Pour the coffee into the beverage.
Finish the beverage by garnishing it with some lemongrass or mint leaves.
Serve and enjoy your homemade orange espresso!