I use a 2-quart glass bowl to steep the tea in.  Sprinkle your baking soda on the bottom of the bowl.  Add your tea bags and pour boiling water over them.  Let steep 15 minutes.

Remove the tea bags and add the sugar.  Stir until dissolved.

Pour the brewed tea into your gallon pitcher and fill it to the top with cold water.  Stir well.  Refrigerate until cool.

Now pour over ice and enjoy!