A spicy "authentic" Mexican salsa adapted from a Salsa book that I have since lost.
Dice the tomatoes.
Dice the onions,put them in the collander and run cold water over them for a few seconds.
Wash, pat dry, and chop the cilantro finely.
Crush the garlic with the cleaver and dice it very finely.
Chop the peppers lengthwise into quarters, scrape out the seeds and white ribs, discard the guts, and dice the flesh finely.
Put all the ingredients in a bowl.
Squeeze the juice of the lime into the bowl.
Add the sugar and salt and stir.
Refrigerate for 30 minutes.
Serve.