Do I need something to make the capsules work in my appliance? May 24, 2019 20:59 Updated No, simply place the capsule in the machine opening and operate it in accordance with the machine instructions. Related articles Which Nespresso machines are compatible with Peet’s Espresso capsules? How much caffeine are in your capsules? Which capsule is most like the espresso that I get in your stores? Doesn’t aluminum influence taste or my health? What is the origin of the coffees?