Heat a frying pan over medium heat and add 1 tablespoon ghee. Once melted, add cashews, almonds, chopped coconut, and raisins. Roast for about 2 minutes until lightly golden and aromatic. Remove and set aside.
In the same pan, add another 1 tablespoon ghee. Add the fox nuts and roast until crispy. Remove and set aside.
Add the remaining 1 tablespoon ghee to the pan. Add the white vermicelli and stir continuously until it turns light golden brown and fragrant. Remove and set aside.
In a separate skillet, combine water and sugar over medium-high heat. Stir until the sugar fully dissolves and forms a light syrup.
Add the roasted nuts and fox nuts to the syrup and cook for about 1 minute. Then add the roasted vermicelli and mix well.
Add the khoya and cook for another 1 minute, stirring gently so everything combines evenly.
Once everything is well mixed and slightly thickened, turn off the heat. Your kemami sevai (sweet vermicelli pudding) is ready to serve.