Question: I have sporadic pain in the left side of my head. It is a sharp pain on one side of my head that comes and goes. It is a short 10 second sharp pain towards the front of my skull in the left side.
A mature coffee plant produces approximately 2000 coffee cherries per year, which is equivalent to about  kilo of roasted coffee. It takes about 3 to 4 years for a coffee plant to mature and will then produce coffee beans for about 15 years.
Caffeine content in coffee is determined by the length of time that the beans are in contact with the water. Ideal extraction of espresso takes approximately 25 seconds. Regular brewed coffee is in contact with the water for much longer.