Most of the people on the globe start their day with either a cup of hot tea or coffee. Each individual has their own preference when it comes to flavour of coffee or tea. A cup of coffee contains approximately 80 to 185 mg of caffeine in it while tea prepared from different tea leaves carries 15 – 70 mg of caffeine. In America, 50% of its total population will drink coffee every day and on an average, a coffee drinker consumes 70 gallons of coffee every year. When it comes to tea, each American citizen will drink only 10 gallons of tea annually.