Heat a cup of water. As it boils, add in the tea powder. Boil for a minute and switch off. Squeeze the lemon and allow to cool completely.
In a bowl, tear down the qamardeen sheets, strain the cooled tea over it and pour the other cup of water. Allow it to soak for around 4 hours.
Pour the whole mixture along with all the water and sugar and blend till smooth.
Pour into a bowl and freeze for two hours.
Pull out and beat well with a fork and put it back for freezing overnight.
Keep on the counter top for 10 minutes, before scooping out and serving.