Crack the eggs into a bowl, add the turmeric and salt, and whisk until frothy.
Stir in the onion, chilli, tomato and most of the coriander.
Heat the mustard oil in a pan on medium heat until it just starts to smoke.
Pour in the eggs, tilt to spread, and cook for 2 minutes until the edges set.
Fold in half, cook 30 seconds more, and finish with the rest of the coriander.
NIKO tip
Fresh eggs have firmer whites, so your omelette holds together and folds without tearing.