South Indian Lime Pickle (Nimbu Achar)

Steps

1. 1

   Prep the limes

   • Make sure the limes are completely dry.
   • Cut each lime in half lengthwise, then each half into quarters, giving 8 small wedges per lime.
   • Pick out and discard all seeds, which turn bitter.
   • Collect any juice that runs onto the board and add it to the bowl.

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   Ready when: All wedges are seedless and roughly even in size.

   Tip: Use a dry knife and board; water introduced now can invite mold later.

2. 2

   Salt and pack

   • In a large non-reactive bowl, toss the lime wedges with the salt and turmeric until every piece is coated.
   • Pack firmly into the sterilized 1-quart jar, pressing down so juice starts to release.
   • Leave about 1 inch (2.5 cm) of headspace and seal.

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   Ready when: Limes are tightly packed and juice begins pooling at the bottom.

   Tip: Skip iodized salt, which can darken the pickle and give a harsh taste.

3. 3

   Cure in the sun

   • Set the jar on a sunny windowsill or in a warm spot (about 80–90°F / 27–32°C) for 7 days.
   • Shake or turn the jar once a day so the brine bathes all pieces.
   • Limes should be submerged in their own juice by day 3.

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   Ready when: Peels are soft and olive-toned, wedges can be squeezed easily, and brine covers the limes.

   Tip: If limes stick out of the brine after day 3, press them down with a clean spoon or add a splash of fresh lime juice.

4. 4

   Grind the fenugreek

   • Heat a small dry skillet over medium-low heat.
   • Add the 2 tsp fenugreek seeds and toast, stirring constantly, for 1 to 2 minutes until golden and fragrant.
   • Tip onto a plate and cool completely, then grind to a fine powder.

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   Ready when: Seeds are light golden and smell nutty; dark brown means bitter.

   Tip: Do not over-toast, as fenugreek turns acrid very quickly.

5. 5

   Mix the spices

   • Open the jar and tip the cured limes and brine into the large dry bowl.
   • Add the ground fenugreek and chili powder and stir until the limes are evenly coated in a thick red paste.

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   Ready when: No dry pockets of spice remain and the limes look uniformly red.

6. 6

   Temper the oil

   • Heat the sesame oil in the small skillet over medium heat for about 2 minutes until it shimmers and a mustard seed dropped in sizzles right away.
   • Add the mustard seeds and whole fenugreek.
   • When the mustard seeds pop (about 30 seconds), remove from heat, stir in the asafoetida for 5 seconds, and let the oil cool.

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   Ready when: Mustard seeds have popped and the oil smells nutty and pungent; fenugreek is just golden.

   Tip: Pour the oil over the limes only when fully cool, or the limes will turn mushy and dark.

7. 7

   Combine and jar

   • Pour the cooled tempered oil, with the seeds, over the spiced limes and stir thoroughly.
   • Pack back into the sterilized jar, pressing down so the limes are submerged.
   • Wipe the rim with a dry cloth.

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   Ready when: A thin layer of oil sits over the limes.

   Tip: Add a little more cooled sesame oil to cover if the limes peek above the surface.

8. 8

   Age the pickle

   • Cover the jar mouth with a clean muslin cloth secured with a rubber band for the first 2 days to let moisture escape, then seal with the lid.
   • Keep in a sunny or warm spot for 7 more days, shaking gently once a day.
   • Taste after a week; the peel should be tender and the flavor balanced.

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   Ready when: Peels are fully tender with no bitter raw edge, and the oil is deep red.

   Tip: Refrigerate right away if you see any fuzzy white or green mold on the surface or notice a sour-yeasty smell; discard if mold appears.