Nutritional information for brewed tea depends on factors such as the amount of tea brewed per serving size, the temperature of the water, what is included in the blend, etc. For this reason, we don't necessarily have readily available nutritional panels for our teas.
For our selections of black, green or white tea, in which the only ingredient is tea leaves, the brewed teas contain zero calories, and less than 1% of any other nutrient. This is in part due to the fact that we don't actually consume the tea leaves.
Herbal blends which include fruit pieces range, but may contain 5-9 calories for an 250ml cup on average.
Blends which contain inclusions like candy cane pieces or chocolate chips range at about 8-12 calories and between 1g and 5g of carbs per 250ml cup.
Matcha is a different example because we do consume the leaves. We'll be happy to provide more information upon request.