Bring 2 cups of water to a boil in a medium saucepan.
8 cups water
Once boiling, remove from the heat and add the tea bags. Steep the tea for 5 minutes.
8 black tea bags
Remove the tea bags from the water.
Transfer the tea into a large pitcher with 4 additional cups of water and baking soda.
8 cups water, 1 teaspoon baking soda
Using the same saucepan, add the remaining 2 cups of water, strawberries, and sugar, and bring to a low simmer for 20 minutes.
8 cups water, 4 cups strawberries, 1½ cups granulated sugar
Remove the strawberries from the heat and allow the syrup to cool to room temperature.
Strain the strawberries through a fine mesh sieve into a small cup or pitcher, pressing the juice out of the berries. Discard the berry pulp.
Add the strawberry syrup to the pitcher with the tea and stir to combine.
Pour and serve over ice.