Tea originates from a single plant, scientifically known as Camellia sinensis, an evergreen that thrives in humid, subtropical environments. The leaves of this plant are used to produce the main types of tea, such as green, black, oolong, and white tea.

The differences between these types do not stem from the plant’s origin, but rather from the way the leaves are processed after harvesting. Green tea undergoes early oxidation through heat to preserve its botanical character and green color. Black tea, on the other hand, undergoes a higher degree of oxidation, resulting in a darker color and a fuller body. Oolong tea falls between these two extremes, with varying degrees of oxidation, giving it a wide range of aromas and flavors.

Botanically, specialized references indicate that the natural habitat of the tea plant extends across a vast Asian region, encompassing areas east of the Himalayas, southern China, northern Indochina, and surrounding regions. Therefore, a precise discussion of tea’s origin is not limited to a single country but is linked to a botanical and geographical history spanning Asia. Over time, tea cultivation spread to many regions around the world, but tea quality remained linked to fundamental, unchanging factors: the plant variety, the growing environment, altitude, climate, harvest season, picking method, and post-harvest processing. Therefore, not all teas are of the same quality. Tea leaves may come from the same plant, yet they can differ significantly in aroma, flavor, and texture depending on the soil in which they grew, the time of harvest, and the processing method.

In Assam, we consider the origin of tea to be the foundation for truly understanding each cup. Knowing the source is not additional information; it is part of understanding the character of tea, grasping its nature, and serving it in a way that respects the inherent qualities of the leaf.