Some yummy suggestions would be, assam, oolong, or lapsang souchong. Most people think that lapsang is too smokey but once you acquire a taste for it you will love it.
[header] How to make hot tea concentrate [title] Boil one quart of water to 100 degrees celsius. [step] Measure out 2/3 cup of loose tea into a canning jar. Good quality, organic tea is the best.