Nespresso machines are designed primarily to work with their specific line of coffee capsules. However, some consumers choose to use reusable capsules, which are available from third-party manufacturers. These reusable capsules can be filled with ground coffee of your choice and used in many Nespresso machines, providing an eco-friendly alternative to single-use capsules. It is important to note that while some users report positive experiences with these reusable options, there can be variability in performance, flavor extraction, and compatibility depending on the specific machine model and the brand of reusable capsule being used. Additionally, using reusable capsules may not be covered under the warranty of the machine. It may be a good idea to ensure that the reusable capsule you consider is explicitly designed for use with Nespresso machines. For additional information, looking on the current web page dedicated to Nespresso products may yield helpful insights and details.