01 -
Wash a 1-quart glass jar and lid in hot soapy water, rinse well, and dry completely. The jar and all utensils should be dry before the limes go in.
02 -
Cut each lime into 8 small wedges. Toss with the kosher salt, then pack tightly into the jar with any juices from the bowl.
03 -
Cover the jar and set it in a bright warm spot for 7 days. Shake once a day to move the salty brine through the lime pieces.
04 -
Heat the oil in a small skillet over medium heat. Add mustard seeds, fenugreek seeds, and curry leaves. Cook for 1-2 minutes, just until the mustard crackles and the spices smell toasted.
05 -
Remove the skillet from the heat. Stir in Kashmiri chili powder, turmeric, and asafoetida. Let the spice oil cool for 5 minutes.
06 -
Pour the spice oil over the salted limes. Add 1-2 tablespoons fresh lime juice only if the mixture looks dry. Press the lime pieces below the oil, cover, and refrigerate for at least 7 more days before serving.