Makhana Popping & Yield from Raw Guri

Popped makhana = raw guri × recovery rate. At about a third recovery, 100 kg of dried guri yields roughly 30–35 kg of popped makhana; the rest leaves as shell, unpopped seed and dust — the processing waste. The tool also gives the raw-to-popped ratio and prices the popped output so you see the full return on a guri lot.

Fox-nut (makhana) is the puffed kernel of the gorgon-nut seed. After roasting and popping, the hard black shell is cracked off and discarded, and unpopped or under-popped seeds are removed — so only the light puffed kernel remains. That kernel is a small fraction of the dried seed weight, which is why recovery sits around 30–35%.

Guri is the dried, graded gorgon-nut seed that goes into popping. After harvesting from ponds, the seeds are cleaned, sun-dried, sized and tempered before roasting. The quality and grading of the guri — moisture, size and maturity — strongly affect how cleanly it pops and therefore the recovery you get.

Traditionally the dried, tempered guri is roasted in a hot pan and then struck quickly with a wooden mallet, which cracks the shell and puffs the kernel into a white ball (lava). The kernel is then polished and graded. Mechanised poppers now do this at scale, but the skill of timing the heat and strike still drives recovery.

Recovery depends on seed grade and maturity, correct drying and tempering, roasting temperature, and the skill or calibration of the popping step. Value depends on the makhana grade — larger, whiter, fully-puffed kernels (higher suta grades) fetch far more per kg. Good guri and good popping lift both the recovery and the price.

Yes — that's the point of the tool. Even though only about a third of the guri weight survives as makhana, the popped product sells at a high price per kg, so the total value can be strong. Use the total-value output to weigh the recovery against the price and decide whether to sell guri or pop it.

It's how many kilos of raw guri it takes to make one kilo of popped makhana — the inverse of the recovery rate. At 33% recovery the ratio is about 3:1, meaning three kg of guri per kg of makhana. It's a quick way to convert between raw and finished weights when buying guri or quoting output.

Enter the raw guri in kg, quintal or tonne, set your recovery rate and the prices, and read the popped makhana, waste, ratio and total value. It works in 8 currencies so processors and traders can plan and quote the output in their local currency.

They are solid planning figures. Real recovery varies with seed grade, moisture, drying, roasting and operator skill, and makhana prices move with grade and season. Calibrate the recovery rate against a known lot from your popping setup, update prices, and use the tool to plan and price rather than as a guaranteed weigh-out.