Step 1Combine the sugar and 1 1/3 cups water in a small saucepan and bring to a simmer over medium-high heat, stirring until the sugar dissolves. Once the syrup comes to a simmer, cook until reduced in volume to 1 cup, about 8 minutes. Remove from heat, add the tea bags and let steep for a few minutes. Discard the bags and transfer the chai syrup to a small pitcher.
Step 2Scoop the ice cream into four coffee cups. For ideal melting speed, tightly pack the scoop. Pour about 1/4 cup hot chai syrup over each mound of ice cream. Serve right away.