1966 is when it was introduced . 43% alcohol is present in it . It is manufactured by Mott's (Keurig Dr Pepper) . calvert,concordia are related to it . It is a type of Bourbon Liqueur . India is where it originated from . X-tra Spicy are the variants of Calvert Extra .  lard are the main ingredients of Calvert Extra . The name of the website is www.kahlua.com
Bourbon Liqueur has 45.0% alcohol by volume