Eight Kilos of Tomatoes, Four Kilos of Mangoes, and Daily Power Cuts
A family in Hoshiarpur has been given 8 kg of ripe tomatoes and 4 kg of raw mangoes on the same day. The refrigerator works, but the village has two power cuts daily, of 4 and 6 hours, and the monsoon has begun, so the air is humid and the courtyard gets only two or three hours of uncertain sun. There is no dehydrator. In the kitchen they have salt, mustard oil, sugar, vinegar, whole spices, glass bottles with metal screw caps, a steel patila, and a pressure cooker. Last year the family bottled tomato puree, kept the bottles on a shelf, and after ten days one bottle had a bulging cap and a sour smell; they threw it away but do not know what went wrong. The mother wants to save as much of the produce as possible for the next two months without spending more than ₹200.
1. Which preservation method would you choose for the tomatoes and which for the mangoes? Justify each choice against the conditions given.
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Tomatoes - cook down into a thick puree/ketchup and bottle hot, or salt-dry a portion. Sun-drying whole tomatoes is unreliable here: humid air and only two to three hours of uncertain sun will produce mould before the pieces dry. The safer route is to simmer the tomatoes with salt, sugar, vinegar and spices until thick, boil the glass bottles and caps, fill while boiling hot, and seal immediately, storing the bottles in the darkest, coolest place. Heat plus acid (tomato is already acidic) plus vinegar plus salt gives several hurdles at once.
Mangoes - salt-oil pickle for the raw ones; sugar syrup or chutney only if the family can consume it fast. Raw mango is ideal for pickle: salt draws out water and lowers water activity, mustard oil forms a surface barrier against air, and whole spices slow spoilage. Pickle is also the cheapest option within ₹200 and does not need the fridge.
Reasoning: choose the method that matches the produce's acidity and the available resources. Delay is the real enemy - sorting and starting the same day matters more than the exact recipe.
2. Explain what most likely went wrong with last year's bulging bottle, and list the practices that would prevent a repeat.
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A bulging cap with a sour smell means gas-producing micro-organisms (bacteria or yeasts) survived and fermented the contents - a sign of spoilage and a possible health risk. Likely causes: the puree was not boiled long enough to kill spores; the bottle or cap was not sterilised; the bottle was filled cool, leaving an air gap and a headspace full of oxygen; or it was stored in a warm, light place. A bulging container should always be discarded, never tasted, because heat-stable toxins may be present.
Prevention, in order:
- Sort out bruised and split fruit; discard mouldy pieces.
- Sterilise bottles and caps by boiling for 10–15 minutes and dry them upside down on a clean cloth - do not wipe with a used cloth.
- Cook the puree with salt, sugar and vinegar until it coats a spoon, then fill the bottles while still boiling hot, leaving little headspace.
- Seal at once, invert for a minute, cool, and check that the cap is concave.
- Store in a dark, cool shelf; once opened, keep in the fridge and use within a few days.
- Label with the date; use the oldest first.
Reasoning: preservation works by several hurdles together - heat, acid, salt/sugar, exclusion of air and clean handling. Missing any one hurdle lets survivors multiply.
3. The family can spend only ₹200 extra. How should that money be used, and how should the pickle and puree be rationed over two months?
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Spend on the things that decide success, not on extras: vinegar (about ₹40), mustard oil (about ₹80–100) and fresh spices/methi seeds (about ₹40–60). Salt and sugar are usually already in the house. Bottles can be reused from the kitchen if boiled; buying new ones would consume the whole budget for no benefit.
Rationing: 8 kg of tomatoes cooked down will give roughly 3–3.5 kg of thick puree - about 5–6 bottles. With 4 kg of raw mangoes, a salt-oil pickle will fill two 1 kg jars and be ready in about two to three weeks. Plan the puree at one bottle a fortnight rather than opening a bottle daily, since an opened bottle spoils quickly even in a fridge that is off for ten hours a day. The pickle, if kept dry and covered with an oil layer, lasts far longer and can be used sparingly with rotis.
Also use 1–2 kg of the ripest tomatoes fresh in the next two days - no method preserves a fully ripe, split tomato better than eating it. Sharing or selling a small surplus is better than watching it rot. Reasoning: a preservation plan should match the quantity preserved to what the family can actually eat before spoilage, not to the size of the harvest.