A tea lover asked: I bought oolong tea bags specifically for cold brewing, but brewing them with cold water just feels a bit unusual. Can cold brew tea be brewed with hot water?
Can cold brew tea be brewed with hot water?
Yes, absolutely! The leaves used for cold brew tea are fundamentally the same as regular tea leaves, so brewing them with hot water is totally fine. However, the advantage of cold brewing lies in low-temperature steeping, which allows the flavors to release slowly. This usually results in a sweeter tea liquor with lower astringency compared to hot brewing. If you switch to hot water, the aroma will fully open up, but you will lose the delicate flavor profile and low-caffeine benefits unique to cold brewing.
What if you reuse cold-brewed tea leaves with hot water?
You can do that too. However, since the cold-brewed leaves have already released most of their compounds, a hot water re-steep might taste a bit weak. We recommend extending the steeping time or adding some fresh tea leaves to boost the flavor.
Should you rinse cold brew tea with hot water first?
This is a method many people use out of concern for “tea hygiene,” similar to the concept of “tea rinsing.” Especially with post-fermented teas like Pu-erh, a quick rinse with hot water is used to remove microorganisms and impurities. Taiwanese teas undergo a relatively rigorous production process with minimal hygiene concerns, so you can skip this step.