Tea stored for a period, whether vacuum-packed or not, will undergo some changes. The chlorophyll and polyphenol compounds in the tea can cause the tea to age, turning yellow, red, and developing an off-flavor, and there is even the possibility of mold growth. Therefore, when Drinking Tea that has been stored for a while, first confirm whether the tea has molded. If there is a musty smell, it should not be consumed. If there is only a slight aged or stale flavor, you can use a brewing method to address it.
Method one:
The water temperature should be high, preferably boiling. The first Infusion should be longer than usual, then discard the infusion without drinking it. Starting with the second infusion, steep for half the normal time, using a quick brew method, and drink it as soon as possible while it's hot.
Method two:
Reduce the water temperature by a few degrees and follow the normal brewing time. This can avoid the bitterness of the tea liquor.
Method three:
It is best to switch to brewing in a large Teapot, such as a teapot warmer, and reduce the proportion of tea leaves. The taste will be better.
For tea stored at home that has developed an off-flavor but hasn't molded, you can try these three methods of brewing. It will still bring out the original flavors!