Chop the tomatoes, onions into a very small dice, chop the cilantro - including the stems very fine. I use the stems as well as the leaves because there is so much flavor in them.
Chop the jalapenos & put the veggies in a large bowl.
Add the olive oil, lime juice, balsamic vinegar & salt. Be light on the salt, since you will probably be serving this with chips, it's easy to over salt.