Bring water to a boil in a medium saucepan. Remove from heat and stir in sugar and Thai tea mix until sugar is dissolved. Cover and let steep for 15 minutes.
Set a Thai-style cloth tea strainer or other fine meshed strainer over a pitcher. Pour tea mixture through and squeeze out liquid from tea leaves. Careful, tea is hot! Thoroughly chill tea. Can be made the night before.
To a 16 ounce glass, add 1/2 cup ice and 1 cup tea. For a pretty serving presentation, very carefully pour 1/4 cup half & half so that it barely mixes with the tea.
Before drinking, stir the half & half into the tea so that they are well mixed. Makes 4 servings.
Notes
Tapioca Pearls go well in Thai Iced Tea as well. See Milk Black Tea with Tapioca Pearls recipe.