So you want to prepare a cup of espresso on the go? The Minipresso GR has you covered. It is a compact device that lets you prepare your espresso using any ground coffee. Just add hot water, coffee, and hand pump. The device works like a bike pump, generating 116 psi of pressure. It has a 70ml water capacity.
The Minipresso GR is compact, lightweight, and portable. The above video shows how you can put it to work.