Greenspot had a limited release each year which is why it was not widely available outside of Dublin. This rareness certainly added to the legend; however, there is a reason this whiskey survived the downfall of Irish whiskey decades earlier.

Mitchell & Son's whiskey was originally marketed as "Pat Whisky", with the labels featuring the logo of a man on a green background. However, in 1933, it was rebranded as "John Jameson & Son 10 Year Old Green Seal" and later became known simply as Green Spot.

Green Spot is a Single Pot Still Irish Whiskey, meaning that both malted and unmalted barley have been distilled in a pot still.