White Tea is made from young, minimally processed tea leaves, picked from the camellia sinesis plant. The bud and two youngest leaves just below it are picked and sun dried, without additional roasting.

White tea contains the least amount of caffeine, containing anywhere from 6 to 55mg per cup (250ml).

Green Tea is made from young leaves and buds from the camellia sinensis plant that have not undergone the same withering and oxidation process as Black or Oolong Tea.

One 8oz cup of Green Tea will average about 25mg of caffeine, improving mental function and clarity.

Black Tea, also known as Red Tea, is more oxidized and stronger in flavor than other types of tea. It's made by withering mature leaves, hand or machine rolling, oxidizing, and then drying.

Like other types of tea, Black Tea contains caffeine, but will contain the highest concentration at an average of 45mg per 8 fluid oz.

Oolong is a partially oxidized form of tea made in a similar process to Black Tea, but with much more attention paid to the drying of the leaves. Most often, the leaves are semi-oxidized in the sun, then shade dried and wok-fired to halt the oxidization process.

On average, an 8oz cup of Oolong Tea will contain 35mg of caffeine, placing it in between Green Tea and Black Tea.

Pu-erh is a type of tea that has been fermented after undergoing similar drying and rolling process to Black Tea. As part of the unique process, pu-erh can be aged for months or even years. It is common to see this tea in a compressed cake form as well as loose leaves.

This type of tea is right under Black Tea in caffeine content, averaging 35mg of caffeine per 8oz cup.