After a batch of pakoras or puris, it feels wasteful to throw away the oil. So it goes into a steel container — and gets reused, and reused again. It is one of the most common habits in Indian homes and food stalls.
What happens to oil when it is reheated
Each time oil is heated to frying temperature, it breaks down a little more. It darkens, thickens, foams and smokes at lower temperatures. Chemically, it builds up what food scientists call Total Polar Compounds (TPC).
India has a rule for this
The Food Safety and Standards Authority of India (FSSAI) has set a limit of 25% Total Polar Compounds for cooking oil — beyond that, oil is not to be used. FSSAI also runs the RUCO (Repurpose Used Cooking Oil) initiative to collect used oil for conversion into biodiesel instead of letting it re-enter the food chain.
Simple habits for home
- Fry in smaller quantities of oil so less is left over.
- If you must reuse, strain it and use it once more for a similar dish, then discard.
- Throw away oil that is dark, thick, foamy, smells off or smokes quickly.
- Never top up old oil with fresh oil and keep going.
- Don’t pour used oil down the drain — collect it in a sealed container for disposal.
Fresh oil tastes better too
Beyond safety, fresh oil simply makes food taste better: crisper, cleaner and truer to the ingredients.
This article is for general information only and is not medical advice. VedSaras products are food items and are not intended to diagnose, treat, cure or prevent any disease. For personal dietary advice, please consult a qualified doctor or nutritionist.






