Viva Los Norteños sez I.
1 brown onion
cilantro (that's dried cilantro in the plastic thing, the heat has killed all our leafies)
Take the top of the core out of the tomato, then cut a thin slice off of one side.
Dice that reasonably fine (I like about 1/4" cubes, but I likes it chunky if your own taste runs to less by all means, chop the fuck out of it)
Keep chopping until you have both tomatoes done and in your bowl. It's important to have a crockery, enamel, or otherwise non-reactive bowl lest the acids in the fruits and veggies turn stuff on you. (essentially that means no aluminum)
Peel the onion.
Chop the shit outta it.
Put it in the bowl with the chopped tomatoes.
Put on some rubber gloves now. Really. When you're handling chiles it's the best way to go. The alternative is to totally scrub your hands (which should be clean anyway) but I mean scrub with scouring powder and a rough cloth, to get the volatile oils from the chiles off your skin. It's easier and safer to use gloves.
Top and halve the chiles. Now, comes the question, to seed or not to seed? Taking the seeds and the pith from out of the chile will lessen the heat. I usually seed. Follow your own taste though. Since these add nothing but pure heat, and I like the flavor of the chiles I usually seed and use more chile.
A grapefruit spoon, with a serrated tip, works perfectly for that.
Mince the chiles, grate the lime zest into the bowl and squeeze the limes.
Mix, and dig in mis amigos.
This salsa rocks out loud for dipping, for tacos, for chilaquiles or huevos rancheros.
It's easy, and much, much better than anything you can buy.