Food Grains — Salt-Water Screen for Ergot

What the salt-water screen is based on

FSSAI rapid guidance describes an ergot screen using a 20% salt solution. Sound grains tend to settle, while lighter ergot bodies float to the surface. Ergot bodies may also look purple-black and longer than normal grains. Kitchen Check should present both observations together, because floating alone is not enough to prove that a particle is ergot.

Keep the solution simple and food-safe

This screen needs only ordinary food-grade salt and clean water. Do not add laboratory chemicals to improve separation. If preparing the solution with a kitchen scale, a 20% weight/volume solution means using 20 grams of salt and adding water until the total solution volume reaches 100 millilitres. The exact household screen does not require dangerous reagents.

Other light material may float too

Broken hulls, damaged grains, insect-affected pieces or other light foreign material can also rise. That is why Kitchen Check should not label every floater as ergot. The user should look for the described abnormal shape and colour and then treat the result as suspicious rather than confirmed.

Do not simply remove floaters and eat the rest

If ergot is genuinely suspected, household sorting is not a guarantee that the remaining grain is safe. Ergot is a food-safety concern, and formal assessment may be needed. Kitchen Check should therefore avoid saying 'remove the floating pieces and use the grain'. A suspicious batch should move to official guidance or testing.

Do not taste suspicious grains

No tasting is required to identify ergot. If unusual purple-black elongated material is present, do not chew it to compare flavour. Visual and salt-water observations are enough for the rapid screen. The tested sample should remain separate from food preparation.

Preserve traceability

For packaged grains, keep the original pack, batch number, purchase date and seller details. For loose grain, note the vendor and date. If several members of a household notice a recurring problem, this information is more useful than repeating the test many times.

Recommended result wording

Use 'No obvious ergot-like floaters seen in this rapid screen', 'Unclear—light debris seen but appearance not typical', or 'Ergot-like floating bodies seen—screen suspicious; do not rely on sorting alone'. This keeps the household observation within its proper limit.

Keep children away from the tested sample

Although this salt-water screen uses ordinary food ingredients, the tested grain should still be treated as a test sample and not returned to the kitchen container. Small children may mistake floating material for something edible. Discard the small tested portion after observation. If the result is suspicious and you may seek official testing, preserve a separate untouched portion from the original batch instead.

A repeat result should use fresh salt solution.