Add the tomatoes, red onion, cilantro, garlic, jalapeno, lime juice, ground cumin, and kosher salt to the pitcher of a standard or high-speed appliance.

Pulse the mixture 5 to 7 times until you reach your desired consistency, scraping down the sides with a spatula if necessary.

Transfer the mixture to a serving bowl. Taste and adjust salt or lime juice if needed.

Serve immediately with tortilla chips or store in an airtight container in the refrigerator for up to a week.