If you came up with a recipe for one of your coffee drinks $($at the Kool Coffee Cafe$)$ and wanted to make sure only your company could use it$,$ the best way to protect the recipe would be

to file for a design patent with the US Patent and Trademark office.

to file for a copyright with the US Copyright Office.

to keep it confidential and follow the guidelines to make it a trade secret.

None of the answers are correct; you cannot protect a recipe from use by others.