01 - Bring 2 cups water to a rolling boil in a small pot or kettle.
02 - Add black tea bags to boiling water. Steep for 4-5 minutes to achieve robust flavor, then remove and discard tea bags.
03 - While tea remains hot, stir in sugar continuously until completely dissolved.
04 - Allow tea to cool to room temperature, then stir in fresh lime juice.
05 - Fill two tall glasses generously with ice cubes. Pour lime-infused tea over ice.
06 - Place fresh lime slice on rim of each glass. For creamy variation, drizzle 1/2 tablespoon sweetened condensed milk over each serving and stir gently to create swirl pattern.