Here’s a tip if you want to enjoy decaffeinated tea but only have caffeinated tea in the house. Steep your tea with a tea bag or leaves as you usually do. Wait about 45 seconds, and then discard the brew. Using the same tea bag or leaves, repeat the steeping process. It works because 80 percent of the caffeine is released within the first 45 seconds and so the second brew is nearly caffeine free.