Altitude is one of the factors that most significantly shape the character of tea. Tea plants can grow at very different elevations, from lower hillsides to mountain regions rising above 2,000 metres.

As altitude increases, growing conditions generally become more demanding: temperatures may be lower, differences between day and night more pronounced, and mist more frequent. Under these conditions, plant growth tends to slow down, encouraging the development of distinctive aromatic and compositional characteristics.

A remarkable example is the Oolong tea from Ali Shan, Taiwan, cultivated at elevations between 1,600 and 2,000 metres. These teas are appreciated for their fruity notes, creamy texture and refreshing character.

Darjeeling, grown on the foothills of the Indian Himalayas, also owes part of its identity to altitude and climatic conditions. Its spring harvests, in particular, are renowned for their delicate and distinctive aromatic profile.

Soil provides the foundation from which tea plants absorb the nutrients needed for their growth. Its composition, mineral content, acidity and surrounding vegetation create different growing conditions, which can influence the characteristics of the tea.

Some of the most distinctive teas come from regions with particularly interesting geological features.

This is the case with the teas of Wuyishan, in China's Fujian province, also known as Yancha, or Rock Teas. The plants grow in a mountainous environment characterised by rocky, mineral-rich soils, traditionally associated with their distinctive mineral character.

The relationship between soil and product thus becomes part of the identity of an origin: a defining element that helps make a tea recognisable and distinguish it from those grown in other regions.

Water is essential to the growth of tea plants, and the balance of moisture available to them can influence leaf development and their characteristics.

Many traditional tea-growing regions are affected by monsoons, seasonal rainfall and high humidity. In some mountainous areas, mist helps maintain a humid environment, while in others, abundant rainfall presents a challenge for growers.

It is not only the amount of water that matters, but also when it arrives. Excessive rainfall can encourage overly rapid vegetative growth and alter the balance of compounds within the leaves.

Assam, in north-eastern India, offers an interesting example. Its tea gardens are predominantly located on the plains of the Brahmaputra Valley, where monsoon rainfall can be particularly intense.

The second harvest, known as the Second Flush, generally takes place between spring and the arrival of the heavier monsoon rains. This period is especially appreciated for teas with the malty character and dried-fruit notes that have made Assam famous.

Sunlight is another determining factor in the growth of tea plants. The amount of light received, its intensity and the duration of exposure all influence leaf development and the composition of their natural compounds.

Strong, direct sunlight can encourage the production of substances associated with more bitter and astringent characteristics. For this reason, some growers use shading techniques to influence leaf development and enhance particular components.

A remarkable example is Japanese Gyokuro, one of the most highly prized Green Teas. Before harvesting, the plants are protected from direct sunlight using special coverings, traditionally made from natural materials.

This process encourages chlorophyll production and helps preserve a higher concentration of L-theanine, an amino acid associated with Gyokuro's distinctive umami character.

Shading is therefore more than an agricultural technique: it is a deliberate choice that helps define the character of a tea.

Behind every high-quality tea are the people who grow and craft it. Knowledge of the land, experience accumulated over time and techniques passed down from one generation to the next are essential in bringing out the distinctive qualities of each origin.

Small producers, in particular, often maintain a deep connection with their land. They understand which varieties are best suited to the environment, recognise changes in the climate and know how to interpret the signs of the plant, adapting their decisions to local conditions.

One example is Yong Luo, a master producer of Phoenix Honey Orchid, a tea from the mountainous Fenghuang region of China. Having grown up in a family deeply connected to tea culture, he has chosen organic and ecological cultivation methods to protect the natural environment in which he works.

This approach involves lower yields and higher costs, but it reflects a commitment to preserving the identity of the land and the original characteristics of the tea.

It is precisely in this meeting between nature and human sensitivity that one of the most authentic expressions of tea culture can be found: not simply growing a plant, but interpreting and preserving a place through one's work.