Bring water to boil and add the thai tea mix (or black tea bags). Add sugar and gently stir to completely dissolve sugar. Gently boil tea for about 3 minutes. Remove from heat.
Allow tea to steep for at least 30 minutes and allow it to cool. (The more concentrated the tea flavor, the better the taste).
Strain the Thai tea and aside to cool (preferred to strain through a traditional re-useable cloth filter to remove any sediment).
Fill glasses with ice and pour in Thai tea leaving enough room to fill in your half and half (or other creamer).
Notes
Pro Tips: You can make this ahead of time and have the Thai tea chilling in the fridge. Completely chill before serving.