In a bowl, whisk 1 ¼ cups of milk with the gelatin and vanilla. In a small saucepan, over the stove, bring the sugar, tea leaves, salt, and the remaining 1 ¼ cups of milk to a boil, over the stove. Turn the heat down a little and let it bubble for about 5 minutes until the tea is brewed (keep in mind that it will always be a very light and milky color). Turn off the heat and remove the pan from the stove. Pour in the milk, gelatin, and vanilla mixture and whisk for about a minute or two. Pour the mixture through a very fine mesh sieve (it's totally fine and safe if some small tea leaves get through the sieve), and into the former milk/gelatin bowl. Set this in the fridge for about 30-45 minutes until partially set.