Lime Pickle — Salt-Cured Oil-Based Preservation (नींबू का अचार)

Ingredients

• Stage 1 — Salt Cure
• 10 limes (nimbu, Citrus aurantifolia), fully yellow and ripe; green limes must not be used
• 30–45 g fine salt, 2–3 tablespoons per 10 limes
• Stage 2 — Oil Dressing
• 100 ml mustard oil, heated to smoking point, then fully cooled before use
• 1 tsp asafoetida (hing)
• 1 tbsp mixed whole spices, per household tradition — mustard seeds, fenugreek, red chilli are typical

Method

1. 1
   Wash the limes and dry them completely, because even a film of water on the skin will dilute the salt at the cut surface and invite spoilage rather than a clean cure. Quarter each lime, cutting to within 5 mm of the base so the quarters remain hinged, then press salt firmly into each cut surface and between the layers as you pack them into a clean, dry glass jar. Seal the jar — the limes will be stiff and bright yellow at this stage.
2. 2
   Place the sealed jar in direct sunlight for a minimum of 14 days, turning it once daily so that every face of every lime spends time against the warm glass. This is where the dish lives or dies: the skin must soften entirely under the combined action of salt, heat, and light — the warmth and the slow draw of moisture work together to mellow the raw bitterness of the white pith in a way that a refrigerator or a shaded shelf simply cannot replicate. At the end of the curing period the skin should yield completely under thumb pressure and the pith should taste muted, with a faint caramelised depth rather than the harsh edge it had on day one.
3. 3
   Drain the brine that has accumulated in the jar and reserve it separately, since this intensely sour lime-salt liquid is a useful souring agent in its own right and should not be discarded. The cured limes, now softened and deeply seasoned, are the base for the oil-dressed version.
4. 4
   Heat the mustard oil in a small pan until it reaches smoking point, then remove it from the heat and allow it to cool completely, so the sharp, acrid rawness that straight mustard oil carries is driven off and the oil becomes mellow enough to dress the pickle without overpowering it. The cooled oil should be clear and still, with no haze of heat remaining before you proceed.
5. 5
   Bloom the mixed whole spices briefly in a small measure of the cooled mustard oil until fragrant, so their volatile oils are drawn into the fat and will carry flavour evenly through the entire jar rather than sitting inert against the fruit. Combine the bloomed spices with the remaining cooled oil, the asafoetida, and the salt-cured limes, return everything to the jar, seal it, and leave for a further 1–2 days for the oil and spices to integrate with the cured fruit. The pickle is ready when the oil is uniformly tinted and the spice aroma has fully permeated the lime pieces.