1 small yellow onion, finely diced
2 roma tomatoes, chopped
2 limes, juiced
1/2 bunch cilantro
1 Jalapeno, finely diced, seeds removed
1 tsp. sea salt
Mix all ingredients in a bowl, Adjust anything you would like. You can leave the seeds and veins in the jalapeno if you want spice. Add more ingredients as necessary to taste.