Capsule Machine Coffee Comparing capsule machines with regular ground coffee powder can be costly and restricting. They can be less satisfying than freshly roasted and ground coffee. Capsules are constructed of aluminum or plastic and are filled with pre-ground coffee. A syringe-like needle pierces the capsule to release the coffee. https://wwwcoffeeeuk94850.ampblogs.com/ten-things-you-learned-in-kindergarden-to-help-you-get-started-with-capsule-coffee-machine-65171021