How to store preparations that have no preservative
Why a cool, dark cupboard is all these preparations need — before and after the bottle is opened.
Two different questions
Unopened and opened are separate problems. Sealed, these preparations are protected by sugar concentration or by distillation. Once air and a spoon are involved, that protection is doing much less work.
Before opening
Somewhere cool and dark. Not a windowsill — light degrades aromatics faster than time. A closed cupboard away from the stove is right; the fridge is unnecessary. Twelve months from the packing date on the label is the honest figure.
After opening
Sharbat and rose water: the same cool, dark cupboard. No fridge needed — keep the cap tightly closed so air and dust stay out.
Gulkand: a cool, dark cupboard with the lid tightly closed — the sugar concentration is what keeps it, and the fridge adds nothing. Always a dry spoon — water introduced into the jar is what starts mould, and a wet spoon is how it gets there.
Amla candy: airtight, at room temperature. Refrigeration makes it sticky rather than safer.
What normal looks like
Sugar crystals forming in gulkand are normal — that is sugar coming out of solution, not spoilage. Colour deepening over months is normal. Sharbat separating slightly is normal; shake it.
What is not normal: fuzzy growth of any colour, a fermented or fizzy smell, or a sour note that was not there before. Throw it out rather than scrape it off. Preservative-free means exactly that, and the trade for no chemistry is that you have to pay a little attention.