Thoroughly mix the gelatin with the cold water, and let sit on the counter.
Make the tea - put the tea bags in the boiling water, and let sit for 5-10 minutes. You want very, very strong tea.
Remove the tea bags, and stir the hot tea into the gelatin mixture until completely dissolved. Add the sweetened condensed milk and stir.
Pour into an 8-inch square pan, lightly greased or lined with parchment paper. Chill for 4 hours or until set.