Combine the grated coconut, condensed milk, sugar, and the seeds from the crushed cardamom pods in a par.
Stir continuously for about 25–30 minutes, ensuring the mixture cooks evenly and doesn’t stick to the pan. You’ll notice it thickening and coming together into a mass.
When the mixture starts to roll away from the sides of the pan and leaves an oily sheen on the bottom, lower the heat.
Transfer the hot mass onto a clean, lightly oiled tray. Using a rolling pin, spread it evenly to about 1 cm thickness.
While still warm, cut into diamond or square shapes. Allow to cool completely.
Remove from the tray.