Two kinds: (I do loose leaf, btw)
Black teas (esp. black currant tea):
Set Kettle to boil
right before boil, scald teapot
I like to put in two teaspoons of tea leaves into the pot, then pour 8 oz or so of boiling water over tea. Steep five minute. Sweeten to taste and then serve over lots of ice. The ice will melt and the extra-strong hot brew will cool and be diluted to the proper taste. You'll have about 16oz or so.
Sometimes I make a bunch as above, cool, and then mix 50/50 with bubbly water.
Green Jasmine iced tea (new favorite)
Make in advance so it has time to cool, or repeat with the 50% more during the brew process and ice immediately.
Put water in kettle
Bring to a champagne boil-- that is, just a minute before it hits a full boil.
Use green jasmine loose leaf or Jasmine pearls tea
Steep for 2-3 minutes, covered
Pour, sweeten and cool. Either use immediately with ice cubes or let cool with the regular 1 tsp. tea per 8 oz water concoction.