I recently got a response back from an email query sent to Haagen Dazs with regards to the amount of green tea and caffeine in their green tea ice cream product (which I recently reviewed here).
They were tight lipped on the exact amount of green tea in the product, classifying it as “proprietary information”, but they did respond about the caffeine content:
“there is approximately 25 mg of caffeine per ½ cup serving which is considered 1 serving.”
Haagen Dazs website lists how they use Japanese matcha tea for this product, and according to the energyfiend website, matcha has roughly 70 milligrams of caffeine in 1 cup (8 fluid onces) of tea. This can be twice to three times of that found in other green teas, depending on the company and brewing length. One reason matcha has a high caffeine content is because the whole leaf is present, ground up, instead of just brewing it as other green teas.
Since matcha should be the only ingredient with any significant amount of caffeine present, we can use the above information to get a ballpark figure for how much green tea is in this product. It works out to be roughly one-third cup (1 teaspoon of matcha powder) in a single serving, and almost one and half cups in the entire package (one pint). This is useful information for those trying to make their own homemade ice cream with a similar flavor.
Unfortunately, this doesn’t translate to a huge amount of tea, so those looking to reap the health benefits of green tea would be better off keeping to matcha tea, or mixing in extra matcha powder into your ice cream.