First mash the chhena till a smooth texture.
Add rice flour, mix and make a dough.
Make small balls from it and then shape each into cubes (around 1 inch). Keep aside.
Now take sugar along with water in a pan and turn on heat.
Over medium heat, start boiling the water. And soon sugar will melt .
Just before 1-string consistency, lower the heat.
Add the cardamom powders and edible camphor powder.
Stir well and then add the chhena cubes.
Gently first stir till the cubes are well coated.
Some bubbles will form, stir continuously but gently.
When the syrup looks to have thick consistency (non transparancy syrup), turn off heat.
Stir for few seconds more and then take out the cubes to a serving plate.
Chhena Khai is ready to serve !