I don't think that's true. A 16 oz Starbucks coffee has 330mg, while a 2oz Starbucks espresso has 150mg. So the espresso has 4x as much caffeine per ounce. (h

I don't think that's true. A 16 oz Starbucks coffee has 330mg, while a 2oz Starbucks espresso has 150mg. So the espresso has 4x as much caffeine per ounce. (http://www.cspinet.org/new/cafchart.htm http://www.cspinet.org/new/cafchart.htm)