01 -
Slice your green chilies into thin rounds and transfer them into a spacious mixing bowl. Set this aside while you work on the spice blend.
02 -
Place your mustard, coriander, and cumin seeds in a dry skillet. Warm them over medium heat for about 1 to 2 minutes, swirling the pan occasionally. You'll know they're ready when they release a lovely, fragrant aroma.
03 -
Transfer your toasted seeds to a spice grinder or mortar and pestle. Pulse them into a coarse powder—you want some texture, not fine dust. Mix this ground blend with the turmeric, garlic powder, and onion powder until everything's well combined.
04 -
In a small saucepan, combine your spice blend with the oil, lemon juice, vinegar if using, and salt. Place it over medium heat and gently warm for just a minute or two—don't let it come to a boil. You're just awakening the flavors here.
05 -
Pour the warm spiced oil mixture directly over your sliced peppers, making sure everything gets coated. Cover the bowl and pop it in the fridge. Let it rest for at least 24 hours, though 48 hours is even better. The longer it sits, the deeper the flavors become.