My mother's Nimbu ka Achar is a decades old recipe relying on a traditional method of pickling lemons - leaving it out in the sun to ferment. This recipe uses only 5 basic ingredients and results in tangy, spicy pickled lemons that lasts for years in your pantry.
Wash and scrub the lemons in warm water to remove any dirt or bacteria. Sanitize the mason jar in boiling water for 10 minutes and dry it with a clean towel.
Chop each lemon into 8 pieces each and add the wedges into a mixing bowl.
Add the salt, garam masala, red chili powder, and paprika into the mixing bowl and toss the lemons until they're evenly coated in the spices.
Transfer the lemons into the sterilized mason jar and cover it with the lid. You'll see that the salt starts to draw out the moisture in the lemons already.
Put the mason jar in a sunny spot on a windowsill for 15-20 todays. Be sure to shake the jar everyday or two. After this timeframe, the peels will have softened and the lemons browned.
Store the pickled lemons in a dark space in your pantry. Enjoy a wedge with paratha, khichdi, and more.
Notes
The lid may buckle due to heat from the sunlight. Be sure to pop the lid every now and the to release the pressure.
To speed up the process, add the spiced lemons into a pot on low to medium heat with ½ teaspoon of turmeric and 1 tablespoon of oil. Sauté in the oil until the skin becomes translucent. Allow the lemons to fully cool, then store in a sterile jar in the sun until they brown.
If the achar is bitter, add salt or sugar to balance it out. You can also store it in the fridge for a few days and it'll begin to mellow.