Remove and discard the shells from your eggs. If your eggs are wet on the outside, dry them with a paper towel. Try to remove as much moisture as possible.
Rub turmeric powder and salt onto the outsides of the eggs. They should be lightly coated and have a yellow tinge. If you'd prefer not to dirty your hands, place the eggs, turmeric and salt in a Ziploc bag. Seal the bag and gently shake/move the eggs around until they are all evenly covered.
In a large non-stick pan (pan should be large enough for your eggs so they have room to move and aren't crowded. Else, fry the eggs in batches), heat the mustard oil over medium high heat. Once the oil is hot, add the eggs.
Watch the eggs closely, they'll cook quickly. Once you notice the outside beginning to crisp and bubble, turn the eggs. Continue frying the eggs until the outsides are evenly cooked and are a deep, golden color.
Once the eggs are done frying, remove onto a plate lined with paper towels. Use as desired.