Cloves — Water Screen for Exhausted Cloves

What FSSAI's clove test observes

FSSAI DART gives a simple water test for exhausted cloves—cloves from which much of the volatile oil has already been extracted. Genuine cloves tend to settle at the bottom, while exhausted cloves tend to float. This is a physical screening clue that can be paired with visual appearance.

Use several cloves, not one

One clove can float or sink for reasons unrelated to exhaustion. Test a small group and look at the overall pattern. Kitchen Check should not fail a pack because one clove stayed on the surface.

Appearance can support the result

FSSAI's sensory guidance notes that exhausted cloves may look smaller and shrunken. That observation can support a suspicious float pattern. It should not be used alone to declare adulteration, because whole spices naturally vary.

Do not taste or chew for pungency

Older sensory guidance mentions weaker pungency in exhausted cloves, but Kitchen Check does not need a tasting step. A suspected adulterated food should not be deliberately chewed to improve confidence. Water and visual observations are enough for the consumer screen.

Whole cloves only

This method depends on individual clove density and shape. It cannot be used on clove powder. Kitchen Check should disable the record when the product is powdered, because ground material needs another validated method.

Do not estimate oil percentage

A glass of water cannot tell how much volatile oil remains in a clove. Floating is only a warning clue. Kitchen Check should not generate numbers such as '50% oil extracted' or '80% pure'.

Recommended result wording

Use 'Most cloves settled—no obvious exhausted-clove pattern', 'Mixed result—unclear', or 'Several small/shrunken cloves floated—screen suspicious'. If a commercial batch is repeatedly suspicious, preserve traceability and seek formal clarification.

Look at the group pattern, not one floater

Whole cloves vary in size, dryness and density, so one floating clove is weak evidence. Kitchen Check should use a small group and ask whether many float while also appearing smaller or shrunken. A mixed result can simply be 'unclear'. If a packaged batch repeatedly shows many exhausted-looking floaters, keep the packet and batch details instead of tasting the cloves or trying chemical oil tests.

Use room-temperature water and a stable glass

Very turbulent water or continuous stirring can keep cloves moving and make sink-versus-float behaviour harder to read. Use ordinary room-temperature water and let the glass become still. Kitchen Check can show a short settle timer before asking for the result. This keeps the observation consistent without pretending it is a precise density measurement.