I thought this one is named after home town of Jack Daniell's distillery so how comes your recipe is not including Jack? Also Cointreau is most common as triple sec. Official Jack Daniell's website is also using different measurement for ingridients. I'm wodnering are the other recipes on the website also just your variation rather than original recipe?
If you find a recipe here, you can just "Google" the original recipe. In most cases it is referred that recipes are adapted.
