Guayusa espresso November 14, 2014/0 Comments/in Brewing /by DeanLoose leaf Guayusa tea can be used as a direct replacement for ground coffee in your espresso machine. This is how we do it. Use the same scoop as you’d do for your coffee. Place it in the espresso holder. Flatten it a little, exactly as you’d do with coffee. Do the espresso thing. Enjoy.