Good black tea you make by just adding hot water, I let soak for seven min. use a press. Low end stuff is bitter. No Milk/Sugar req. just some people are addicted to the milk/sugar. Their is low caffeine versions, it varies allot, jasmine I found has one of the Highest levels that I have.
If you have multy layer cheese cloth then ok, however if one misses something and theirs some spores in their then game over.
Going to fabric land or other fabric place is great to get proper cotton, its tighter then the commercial stuff.