In a food processor or high-speed blender, pulse or blend all of the ingredients until desired consistency. If using a blender, use a low chopping setting.
Taste and adjust seasonings, as desired.
Allow to rest for 30-60 minutes so the ingredients' flavors can combine.
Drain excess liquid using a mesh colander, if desired.
Store leftovers in the refrigerator for up to 4 days.
Notes
* You can use any variety of tomato to make this salsa.** Depending on your level of spice, use half or all of the jalapeño. If you prefer your salsa more mild, remove the seeds. If you prefer your salsa spicy, feel free to include some of the seeds or more jalapeño. Wash your hands well in soap and water and be very careful to not touch your eyes after handling the peppers. If you have sensitive skin, consider wearing disposable food-safe gloves.