If using frozen grated coconut, thaw on the counter for 30 mins
If grating a coconut, make sure to grate leaving a layer close to the shell, to avoid the brown specks off the shell getting scraped.
Use the coconut water instead of water for grinding. If after pouring onto the sheet / plate, you feel that the consistency has not been reached, take it back into the pan and stir again until the right consistency is reached.
Pale brown color of the burfi is due to the cane sugar.
Cashews can most certainly be substituted for almonds and/or added, no soaking or blanching needed.
Poppy seeds are hard to grind due to their tiny size. They grind well when soaked.
Burfi stores well up to two weeks when stored in a dry airtight container.