Since receiving Bonnie Prince Charlie's recipe in the 18th century, the MacKinnon family still owns the secret recipe for this alcoholic beverage.
The MacKinnon family immediately made the recipe public.
mnli hypothesis: The MacKinnon family immediately made the recipe public. premise: Since receiving Bonnie Prince Charlie's recipe in the 18th century, the MacKinnon family still owns the secret recipe for this alcoholic beverage.