A K-Cup is a single-serve coffee pod designed for use in compatible coffee machines, primarily the Keurig brewing system. Each K-Cup contains a pre-measured amount of ground coffee, tea, or other beverages, sealed in a plastic cup with a foil lid. This design allows for quick and convenient brewing, as users can simply insert a K-Cup into the machine and brew a fresh cup of coffee in minutes. K-Cups come in a variety of flavors and brands, catering to different taste preferences. They are popular for their ease of use and minimal cleanup, as there is no need for measuring or grinding coffee beans. However, the environmental impact of single-use plastic K-Cups has led to discussions about recycling and sustainability in the coffee industry.