Hershey's Special Dark Bars
Hershey's Special Dark Mildly Sweet Chocolate Bar is made by the American chocolate company, Hershey.
This dark chocolate bar is listed as 45% cacao. The caffeine amounts were once published by Hershey but no longer are. The amount listed above is from earlier information from Hershey.
However Hershey have stated caffeine amounts of Cocoa:
Every 1 tablespoon of Hershey's Special Dark Cocoa contains 8.1 mg of caffeine.
The Special Dark chocolate is dutched.
"Dutch processed cocoa has an alkalizing agent similar to baking soda added to neutralize the natural acidity of cocoa. It has a more mellow flavor and a darker color."