All true teas – not herbal tisanes or infusions are made from the Camellia Sinensis. These plants grow in warm climates with the very best teas coming from the highest altitudes – at that level the plant leaves are slower to mature and this means that they have a much richer flavour. Although the plants all come from the same strain – Camellia Sinensis – different growing conditions such as altitude, climate and soil will affect the flavour of the tea.

It is when the processing takes place that the difference appears between black and green teas. There is in fact another tea in the middle of these two, which is a greenish brown colour and is called oolong tea.

Green tea is the least processed of the three and therefore retains nearly all its nutritional content. One particular antioxidant which is called a Catechin (epigallocatechin-3-gallate EGCG for short) is…