“The green tea” from Japanese teas, it cannot be made with boiling water of 100 degrees. Because it will mess the original taste of tea and become a bitter tea. It depends on the kind of tea but using hot water that is 70 to 80 degrees is the correct way.
“HEALSIO Ocha Presso”, released by SHARP is a tea maker that grinds tea leaves and can set the temperature of hot water at 70 and 85 degrees. It’s like a Japanese version of an espresso machine. You can make it full of flavors and a tasty tea by setting it to the right temperature for hot water.