**2. History and origin of tea**

Scholars believe that Shen Nung, the second emperor of China, first recognized tea in 2737 BCE. It was a unique coincidence that the Emperor was a cup of hot water, while resting under a tree shade when a plant leaf blew into the hot water in the cup, he felt a pleasant flavor and continued using tea [12, 13]. According to a narration by Serafini et al. [14], nobody knew much about tea until 1560 when a Portuguese man named Father Jasper de Cruz who was also a Jesuit missionary, encountered and wrote about it.

By as early as 1657, people from England, particularly in London had already realized the importance of tea as a health drink as it was being sold by a few people in the coffee house of Garway. Later on, in 1826, the commercial selling of tea began in seals designed by John Horniman, and later was the introduction of packages in lead-lines. In 1870, twinings of England began a uniform blending of tea.

A few years later, in 1904, Richard Blechynden an Englishman created ice tea. This eventuality preceded the invention of tea bags by Thomas Sullivan in 1908, a then-renowned New York tea importer who could send tea in small silk bags to his clients. It was until 1953 that traders finally introduced the world's first instant tea, which to date became a primary drink throughout Europe, North America, North Africa, and Asia.
