I get one of these every morning, and I wanted to see if I could make them at home. Mission accomplished! Pick up a box of Tazo Green Tea bags at the store-about $5 for 6 bags. Soak five bags in four cups of boiling tea for 5 minutes. When it's done, take the bags out (without squeezing the water out of them) and pour in 4 cups of cold water in with the original tea bag water. Put this in the fridge to get cold. This is the concentrate they use to make the tea-it will be very strong. Then make the syrup they use to sweeten it with (if you like it sweet). Boil 1 cup of water with 1 cup of sugar until the sugar dissolves-this will be the syrup. I put more than 1 cup of sugar in because I didn't think it would be sweet enough, but dh said it was almost too sweet. When your concentrate is cold, take a shaker (I used our martini shaker) and put a few ice cubes in it. Pour concentrate into about half of the shaker, and fill the rest with cold tap water. Shake it really well and pour it into a glass over ice. Then put a bit of the syrup into it and stir. Done! It tastes JUST like it. Now I have a pitcher of the concentrate in the fridge, and a measuring glass full of syrup. Each morning I'll just pour, shake, put it into a travel mug and go!