You Mei Choi,Youg Jun Choi,Ki Chan Hyun,Hyo Min Kwon
申请号：
US15158753
公开号：
US09497978B2
申请日:
2016.05.19
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method of making coffee is provided. After a cold-brewed coffee is extracted from coffee beans, nitrogen gas is charged into the cold-brewed coffee. The cold-brewed coffee into which nitrogen gas is dissolved, is cooled to form a nitrogen-charged coffee. Therefore, the nitrogen-charged coffee may keep a rich density of foam and a flavor.
