While the keyword suggests a downloaded file, here is the legal and recommended method for 99% of users.
For the technical archivists and homebrew enthusiasts (the people most likely to search for this exact string), here is what is inside that file once you extract it: Cuphead -NSP--The Delicious Last Course DLC-.rar
Cuphead - The Delicious Last Course [0100A5C00D162800].nsp
├── Program.nca (Game code – the new Ms. Chalice logic & island scripts)
├── Control.nca (Icon and metadata – shows "The Delicious Last Course" on home menu)
├── LegalInformation (EULA for the DLC)
└── Ticket (Proof of entitlement – required for CFW to bypass eShop check)
The title ID (0100A5C00D162800) is unique to the DLC. If you ever install it via USB using software like NS-USBloader, this ID ensures your base game recognizes it. While the keyword suggests a downloaded file, here
The "Delicious Last Course" DLC can be purchased and downloaded through various digital storefronts, including Steam, the Xbox Store, the Nintendo eShop, and the PlayStation Store. It requires the base game "Cuphead" to play. The title ID ( 0100A5C00D162800 ) is unique to the DLC