During the bronchial colds season, I brew tea to put into a thermos for drinking in small quantities as throat medicine, (mixing with: honey and lemon or milk, just before drinking). A common procedure, I am sure. I strain the tea as I pour it into the thermos. I am using common grocery "Liptons" loose tea. !??! This used to work quite well until last an this year. Tata, the owners of Liptons, have been lowering the quality of their product. The taste has become more like bitter water, and or grass, and the box had more 'floor sweepings'. Even though the freshly brewed tea appear okay and drinkable, After sitting for several hours (overnight) it turns very dark and becomes bitter, (oxidized ??).
Any suggestions for an easy cure? short of switching to a 'Gourmet' tea? Filtering through a coffee filter to get the dregs out helps some, but cools the tea and takes an excessively long time.