If you love jalapeños, you will love this sauce. It’s so easy to prepare and amazing with tostadas. It can be served warm or cold—but it is picante (spicy)!
Heat the oil in a nonstick skillet over medium heat and sauté the onion until translucent, 5 to 6 minutes. Add the garlic and sauté for about 1 minute more.
Add the tomatoes and their juices and stir to combine, then add the jalapeños, oregano, and salt.
Bring to a boil, then lower the heat and simmer for 15 to 20 minutes, stirring frequently, until t