This listing reflects 60% cacao dark chocolate made by Ghirardelli and shows the caffeine content of one 13 gram (.44oz) square. In larger quantities their 60% would have 109mg of caffeine per 100g of dark chocolate.

Ghirardelli also has other dark chocolate with more cacao and also espresso which increases the caffeine content and are as follows;

• 72% Cacao Twilight Delight: 22mg/17g square or 128mg/100g
• 86% Cacao Midnight Reverie: 20mg/13g square or 152.45mg/100g
• Espresso Escape: 17mg/13g square or 129mg/100g
• Toffee Interlude: 9mg/13g square or 70mg/100g